cmos checksum error

[Amanda]

Hello,

Each time I boot my computer, it shows cmos checksum error. Press F8 for
system configuration but the F8 doesn't work, F9 doesn't work either. F1
allows it to boot and the system gets set at 1st Jan 2007 12.00 am.

Regardless of how many times I change the bios, it will revert after each
power down. I don't have a floppy but it seems to insist i do, strange thing
is .. a floppy disk drive and floppy controller exist on my device manager.
If I remove it, the computer detects the zoombie floppy and reinstalls it.

I've also replaced the button battery but that didn't help.

Could anyone help?

Thanks in advance.
Sonny

P.S I had to reset the time before posting because it says this post is too
old

 

[Unknown]

How did you change the BIOS? Did you rewrite it?
"Amanda" <someone@singnet.com.sg> wrote in message
news:urQUFQ7CLHA.5808@TK2MSFTNGP02.phx.gbl...
> Hello,
>
> Each time I boot my computer, it shows cmos checksum error. Press F8 for
> system configuration but the F8 doesn't work, F9 doesn't work either. F1
> allows it to boot and the system gets set at 1st Jan 2007 12.00 am.
>
> Regardless of how many times I change the bios, it will revert after each
> power down. I don't have a floppy but it seems to insist i do, strange
> thing
> is .. a floppy disk drive and floppy controller exist on my device
> manager.
> If I remove it, the computer detects the zoombie floppy and reinstalls it.
>
> I've also replaced the button battery but that didn't help.
>
> Could anyone help?
>
> Thanks in advance.
> Sonny
>
> P.S I had to reset the time before posting because it says this post is
> too old
>

 

[Bob I]

You have a hardware problem. Are you sure the button battery was good?
Are you killing power to the PC externally, like with a power strip? If
so, don't.

Amanda wrote:

> Hello,
>
> Each time I boot my computer, it shows cmos checksum error. Press F8 for
> system configuration but the F8 doesn't work, F9 doesn't work either. F1
> allows it to boot and the system gets set at 1st Jan 2007 12.00 am.
>
> Regardless of how many times I change the bios, it will revert after each
> power down. I don't have a floppy but it seems to insist i do, strange thing
> is .. a floppy disk drive and floppy controller exist on my device manager.
> If I remove it, the computer detects the zoombie floppy and reinstalls it.
>
> I've also replaced the button battery but that didn't help.
>
> Could anyone help?
>
> Thanks in advance.
> Sonny
>
> P.S I had to reset the time before posting because it says this post is too
> old
>
>

 

[Ben Myers]

"Amanda" <someone@singnet.com.sg> wrote in message news:urQUFQ7CLHA.5808@TK2MSFTNGP02.phx.gbl...
> Hello,
> Each time I boot my computer, it shows cmos checksum error. Press F8 for
> system configuration but the F8 doesn't work, F9 doesn't work either. F1
> allows it to boot and the system gets set at 1st Jan 2007 12.00 am.
<snip>

Try tapping the F8 key repeatedly or hitting it before the error message is
displayed. Be sure to save any changes you make. If this doesn't help, try
a different keyboard.

Ben

 

[Amanda]

Hi,

Thanks to all who replied. I reset the BIOS hitting delete, change the first
boot sequence to hard disk, disable the search for floppy. Change the time
yet again.

Bob L, I bought a brand new battery and its the same thing.

regards
Sonny



"Ben Myers" <benjmyers@REMOVEmindspring.com> wrote in message
news:e7xeOJ%23CLHA.420@TK2MSFTNGP02.phx.gbl...
"Amanda" <someone@singnet.com.sg> wrote in message
news:urQUFQ7CLHA.5808@TK2MSFTNGP02.phx.gbl...
> Hello,
> Each time I boot my computer, it shows cmos checksum error. Press F8 for
> system configuration but the F8 doesn't work, F9 doesn't work either. F1
> allows it to boot and the system gets set at 1st Jan 2007 12.00 am.
<snip>

Try tapping the F8 key repeatedly or hitting it before the error message is
displayed. Be sure to save any changes you make. If this doesn't help, try
a different keyboard.

Ben

 

[Amanda]

Ben,

I've just rebooted and tried hitting the F8 button, doesn't work, comes up
to the same screen with the f8 f9 f1 and delete option.

regards,
Sonny


"Ben Myers" <benjmyers@REMOVEmindspring.com> wrote in message
news:e7xeOJ%23CLHA.420@TK2MSFTNGP02.phx.gbl...
"Amanda" <someone@singnet.com.sg> wrote in message
news:urQUFQ7CLHA.5808@TK2MSFTNGP02.phx.gbl...
> Hello,
> Each time I boot my computer, it shows cmos checksum error. Press F8 for
> system configuration but the F8 doesn't work, F9 doesn't work either. F1
> allows it to boot and the system gets set at 1st Jan 2007 12.00 am.
<snip>

Try tapping the F8 key repeatedly or hitting it before the error message is
displayed. Be sure to save any changes you make. If this doesn't help, try
a different keyboard.

Ben

 

[Amanda]

Bob,

Nope it didn't work. Its the same even if i do a Start-Turn off
Computer-Restart.

Sonny

"Bob I" <birelan@yahoo.com> wrote in message
newslxZzV9CLHA.5464@TK2MSFTNGP05.phx.gbl...
> You have a hardware problem. Are you sure the button battery was good? Are
> you killing power to the PC externally, like with a power strip? If so,
> don't.
>
> Amanda wrote:
>
>> Hello,
>>
>> Each time I boot my computer, it shows cmos checksum error. Press F8 for
>> system configuration but the F8 doesn't work, F9 doesn't work either. F1
>> allows it to boot and the system gets set at 1st Jan 2007 12.00 am.
>>
>> Regardless of how many times I change the bios, it will revert after each
>> power down. I don't have a floppy but it seems to insist i do, strange
>> thing
>> is .. a floppy disk drive and floppy controller exist on my device
>> manager.
>> If I remove it, the computer detects the zoombie floppy and reinstalls
>> it.
>>
>> I've also replaced the button battery but that didn't help.
>>
>> Could anyone help?
>>
>> Thanks in advance.
>> Sonny
>>
>> P.S I had to reset the time before posting because it says this post is
>> too old
>

 

[Bob I]

If it won't hold the BIOS settings through a simple Restart, (never
actually removes power from the motherboard)then it certainly is a
hardware issue with the motherboard.

Amanda wrote:

> Bob,
>
> Nope it didn't work. Its the same even if i do a Start-Turn off
> Computer-Restart.
>
> Sonny
>
> "Bob I" <birelan@yahoo.com> wrote in message
> newslxZzV9CLHA.5464@TK2MSFTNGP05.phx.gbl...
>
>>You have a hardware problem. Are you sure the button battery was good? Are
>>you killing power to the PC externally, like with a power strip? If so,
>>don't.
>>
>>Amanda wrote:
>>
>>
>>>Hello,
>>>
>>>Each time I boot my computer, it shows cmos checksum error. Press F8 for
>>>system configuration but the F8 doesn't work, F9 doesn't work either. F1
>>>allows it to boot and the system gets set at 1st Jan 2007 12.00 am.
>>>
>>>Regardless of how many times I change the bios, it will revert after each
>>>power down. I don't have a floppy but it seems to insist i do, strange
>>>thing
>>>is .. a floppy disk drive and floppy controller exist on my device
>>>manager.
>>>If I remove it, the computer detects the zoombie floppy and reinstalls
>>>it.
>>>
>>>I've also replaced the button battery but that didn't help.
>>>
>>>Could anyone help?
>>>
>>>Thanks in advance.
>>>Sonny
>>>
>>>P.S I had to reset the time before posting because it says this post is
>>>too old
>>
>
>

 

[Jim]

On Tue, 15 Jun 2010 07:00:15 +0800, "Amanda" <someone@singnet.com.sg>
wrote:

>
>Bob,
>
>Nope it didn't work. Its the same even if i do a Start-Turn off
>Computer-Restart.
>
>Sonny
>
>"Bob I" <birelan@yahoo.com> wrote in message
>newslxZzV9CLHA.5464@TK2MSFTNGP05.phx.gbl...
>> You have a hardware problem. Are you sure the button battery was good? Are
>> you killing power to the PC externally, like with a power strip? If so,
>> don't.
>>
>> Amanda wrote:
>>
>>> Hello,
>>>
>>> Each time I boot my computer, it shows cmos checksum error. Press F8 for
>>> system configuration but the F8 doesn't work, F9 doesn't work either. F1
>>> allows it to boot and the system gets set at 1st Jan 2007 12.00 am.
>>>
>>> Regardless of how many times I change the bios, it will revert after each
>>> power down. I don't have a floppy but it seems to insist i do, strange
>>> thing
>>> is .. a floppy disk drive and floppy controller exist on my device
>>> manager.
>>> If I remove it, the computer detects the zoombie floppy and reinstalls
>>> it.
>>>
>>> I've also replaced the button battery but that didn't help.
>>>
>>> Could anyone help?
>>>
>>> Thanks in advance.
>>> Sonny
>>>
>>> P.S I had to reset the time before posting because it says this post is
>>> too old
>>
>

Have you done a virus scan ?

 

[Unknown]

You need to rewrite the BIOS. Contact the computer manufacturer and get the
correct method to rewrite the BIOS.
I use the floppy to update or rewrite the BIOS.
"Amanda" <someone@singnet.com.sg> wrote in message
news:%23aXpUlHDLHA.4400@TK2MSFTNGP05.phx.gbl...
> Ben,
>
> I've just rebooted and tried hitting the F8 button, doesn't work, comes up
> to the same screen with the f8 f9 f1 and delete option.
>
> regards,
> Sonny
>
>
> "Ben Myers" <benjmyers@REMOVEmindspring.com> wrote in message
> news:e7xeOJ%23CLHA.420@TK2MSFTNGP02.phx.gbl...
> "Amanda" <someone@singnet.com.sg> wrote in message
> news:urQUFQ7CLHA.5808@TK2MSFTNGP02.phx.gbl...
>> Hello,
>> Each time I boot my computer, it shows cmos checksum error. Press F8 for
>> system configuration but the F8 doesn't work, F9 doesn't work either. F1
>> allows it to boot and the system gets set at 1st Jan 2007 12.00 am.
> <snip>
>
> Try tapping the F8 key repeatedly or hitting it before the error message
> is
> displayed. Be sure to save any changes you make. If this doesn't help,
> try
> a different keyboard.
>
> Ben
>
>
>

 

[Ben Myers]

"Amanda" <someone@singnet.com.sg> wrote in message news:#aXpUlHDLHA.4400@TK2MSFTNGP05.phx.gbl...
> Ben,
> I've just rebooted and tried hitting the F8 button, doesn't work, comes up
> to the same screen with the f8 f9 f1 and delete option.

If you are saying that pressing the F8 key does nothing when the message
is displayed, try a different keyboard. If you are getting into the BIOS setup,
make sure you are saving the changes, since this typically is not done automatically.

Ben

 

[Linus]

After you replace the CMOS battery, you often need to reset the CMOS. Usually
you do this by taking the battery out, installing it backwards in its holder
for 20 or 30 minutes to bleed off all the current. Then just take the battery
out, turn it around and install it properly.

Some mother boards have shorting terminals near the battery that let you
bleed off the current without removing the battery, check your users guide
for instructions on how to use those.

Either way you do it, when you restart your computer, the OS will reload the
CMOS with clean settings that may solve your problem.

Linusverl


"Ben Myers" wrote:

> "Amanda" <someone@singnet.com.sg> wrote in message news:#aXpUlHDLHA.4400@TK2MSFTNGP05.phx.gbl...
> > Ben,
> > I've just rebooted and tried hitting the F8 button, doesn't work, comes up
> > to the same screen with the f8 f9 f1 and delete option.
>
> If you are saying that pressing the F8 key does nothing when the message
> is displayed, try a different keyboard. If you are getting into the BIOS setup,
> make sure you are saving the changes, since this typically is not done automatically.
>
> Ben
> .
>

 

[Amanda]

Thanks to all who replied.

Ben - Just bought a new keyboard and tried, nope f8 & f9 still doesn't work.
Only working options are f1 and delete. Yes, i did save after changing the
bios setup. Doesn't work.

Jim - Yes I have anti virus installed and schedule to update and run
everyday. But the time set back because of the checksum error has made it
run at rather untimely. I do check the history once in a while to make
sure.

Linus - "After you replace the CMOS battery, you often need to reset the
CMOS. Usually you do this by taking the battery out, installing it backwards
in its holder" I don't quite understand this, do I take reset after I take
out the battery or after I replaced the battery? I hope you mean to take out
the old battery, drain off with the old battery and then replace with new.
Is that it? I'll try that.

I seem to think that the motherboard is dying. Either I get a new one or I
just punch F1 each time I turn on the computer and ignore the time.

Regards
Sonny


"Linus" <Linusverl@mspamn.com> wrote in message
newsFD0CEE0-DB19-4503-B0D7-DFC103B71494@microsoft.com...
> After you replace the CMOS battery, you often need to reset the CMOS.
> Usually
> you do this by taking the battery out, installing it backwards in its
> holder
> for 20 or 30 minutes to bleed off all the current. Then just take the
> battery
> out, turn it around and install it properly.
>
> Some mother boards have shorting terminals near the battery that let you
> bleed off the current without removing the battery, check your users guide
> for instructions on how to use those.
>
> Either way you do it, when you restart your computer, the OS will reload
> the
> CMOS with clean settings that may solve your problem.
>
> Linusverl
>
>
> "Ben Myers" wrote:
>
>> "Amanda" <someone@singnet.com.sg> wrote in message
>> news:#aXpUlHDLHA.4400@TK2MSFTNGP05.phx.gbl...
>> > Ben,
>> > I've just rebooted and tried hitting the F8 button, doesn't work, comes
>> > up
>> > to the same screen with the f8 f9 f1 and delete option.
>>
>> If you are saying that pressing the F8 key does nothing when the message
>> is displayed, try a different keyboard. If you are getting into the BIOS
>> setup,
>> make sure you are saving the changes, since this typically is not done
>> automatically.
>>
>> Ben
>> .
>>

 

[Jose]

On Jun 18, 4:00 pm, "Amanda" <some...@singnet.com.sg> wrote:
> Thanks to all who replied.
>
> Ben - Just bought a new keyboard and tried, nope f8 & f9 still doesn't work.
> Only working options are f1 and delete. Yes, i did save after changing the
> bios setup. Doesn't work.
>
> Jim - Yes I have anti virus installed and schedule to update and run
> everyday. But the time set back because of the checksum error has made it
> run at rather untimely.  I do check the history once in a while to make
> sure.
>
> Linus - "After you replace the CMOS battery, you often need to reset the
> CMOS. Usually you do this by taking the battery out, installing it backwards
> in its holder" I don't quite understand this, do I take reset after I take
> out the battery or after I replaced the battery? I hope you mean to take out
> the old battery, drain off with the old battery and then replace with new..
> Is that it? I'll try that.
>
> I seem to think that the motherboard is dying. Either I get a new one or I
> just punch F1 each time I turn on the computer and ignore the time.
>
> Regards
> Sonny
>
> "Linus" <Linusv...@mspamn.com> wrote in message
>
> newsFD0CEE0-DB19-4503-B0D7-DFC103B71494@microsoft.com...
>
>
>
> > After you replace the CMOS battery, you often need to reset the CMOS.
> > Usually
> > you do this by taking the battery out, installing it backwards in its
> > holder
> > for 20 or 30 minutes to bleed off all the current. Then just take the
> > battery
> > out, turn it around and install it properly.
>
> > Some mother boards have shorting terminals near the battery that let you
> > bleed off the current without removing the battery, check your users guide
> > for instructions on how to use those.
>
> > Either way you do it, when you restart your computer, the OS will reload
> > the
> > CMOS with clean settings that may solve your problem.
>
> > Linusverl
>
> > "Ben Myers" wrote:
>
> >> "Amanda" <some...@singnet.com.sg> wrote in message
> >>news:#aXpUlHDLHA.4400@TK2MSFTNGP05.phx.gbl...
> >> > Ben,
> >> > I've just rebooted and tried hitting the F8 button, doesn't work, comes
> >> > up
> >> > to the same screen with the f8 f9 f1 and delete option.
>
> >> If you are saying that pressing the F8 key does nothing when the message
> >> is displayed, try a different keyboard.  If you are getting into theBIOS
> >> setup,
> >> make sure you are saving the changes, since this typically is not done
> >> automatically.
>
> >> Ben
> >> .

I don't see where you have identified your system well enough (the
right questions have not been asked).

You can try things all day long - how it that working out?

If your system boots, do this and we can identify the motherboard and
then you might get some better ideas:

Please provide additional information about your system:

Click Start, Run and in the box enter:

msinfo32

Click OK, and when the System Summary info appears, click Edit, Select
All, Copy and then paste the information back here.

There will be some personal information (like System Name and User
Name), and whatever appears to be private information to you, just
delete it from the pasted information.

This will minimize back and forth Q&A and eliminate guesswork. (too
late for the guesswork part).

 

[Jose]

On Jun 16, 6:20 am, Linus <Linusv...@mspamn.com> wrote:
> After you replace the CMOS battery, you often need to reset the CMOS. Usually
> you do this by taking the battery out, installing it backwards in its holder
> for 20 or 30 minutes to bleed off all the current. Then just take the battery
> out, turn it around and install it properly.
>
> Some mother boards have shorting terminals near the battery that let you
> bleed off the current without removing the battery, check your users guide
> for instructions on how to use those.
>
> Either way you do it, when you restart your computer, the OS will reload the
> CMOS with clean settings that may solve your problem.
>
> Linusverl
>
>
>
> "Ben Myers" wrote:
> > "Amanda" <some...@singnet.com.sg> wrote in messagenews:#aXpUlHDLHA.4400@TK2MSFTNGP05.phx.gbl...
> > > Ben,
> > > I've just rebooted and tried hitting the F8 button, doesn't work, comes up
> > > to the same screen with the f8 f9 f1 and delete option.
>
> > If you are saying that pressing the F8 key does nothing when the message
> > is displayed, try a different keyboard.  If you are getting into the BIOS setup,
> > make sure you are saving the changes, since this typically is not done automatically.
>
> > Ben
> > .

Where can I read about this method of resetting the CMOS by inserting
the battery backwards for 20 to 30 minutes to bleed off the current?

 

[Unknown]

You can't read about putting the battery in backwards because it doesn't
exist. That is
about the dumbest thing you can do on anything with a battery.
"Jose" <jose_ease@yahoo.com> wrote in message
news:099ac1fa-70b5-4002-9f8a-ef94337afe0f@z10g2000yqb.googlegroups.com...
On Jun 16, 6:20 am, Linus <Linusv...@mspamn.com> wrote:
> After you replace the CMOS battery, you often need to reset the CMOS.
> Usually
> you do this by taking the battery out, installing it backwards in its
> holder
> for 20 or 30 minutes to bleed off all the current. Then just take the
> battery
> out, turn it around and install it properly.
>
> Some mother boards have shorting terminals near the battery that let you
> bleed off the current without removing the battery, check your users guide
> for instructions on how to use those.
>
> Either way you do it, when you restart your computer, the OS will reload
> the
> CMOS with clean settings that may solve your problem.
>
> Linusverl
>
>
>
> "Ben Myers" wrote:
> > "Amanda" <some...@singnet.com.sg> wrote in
> > messagenews:#aXpUlHDLHA.4400@TK2MSFTNGP05.phx.gbl...
> > > Ben,
> > > I've just rebooted and tried hitting the F8 button, doesn't work,
> > > comes up
> > > to the same screen with the f8 f9 f1 and delete option.
>
> > If you are saying that pressing the F8 key does nothing when the message
> > is displayed, try a different keyboard. If you are getting into the BIOS
> > setup,
> > make sure you are saving the changes, since this typically is not done
> > automatically.
>
> > Ben
> > .

Where can I read about this method of resetting the CMOS by inserting
the battery backwards for 20 to 30 minutes to bleed off the current?

 

[Paul]

> > "Jose" <jose_ease@yahoo.com> wrote in message
> >
> > Where can I read about this method of resetting the CMOS by inserting
> > the battery backwards for 20 to 30 minutes to bleed off the current?
>
> Unknown wrote:
> You can't read about putting the battery in backwards because it doesn't
> exist. That is about the dumbest thing you can do on anything with a battery.

There is a diode in that path, that also functions as
reverse polarity protection. Go to page 18 of this document, and
look at diode D3 in the bottom left hand corner of page 18. if
the battery were reversed, the D3 diode would be reverse biased,
and the current could not flow.

http://www.intel.com/design/chipsets/designex/BXDPDG10.htm

Also, as a result of that diode, plopping the battery in
backwards, isn't that effective. The provided CMOS jumper,
applied to the three pin header shown in that schematic, is
effective at doing its job. It won't take long to
drain the CMOS well. It's a bit harder, on the motherboards
that provide solder pads and no header pins, to consistently
hold the connection long enough, to complete
the draining. But if you have a header to work with,
that is just as good at sitting in a holding pattern, as
jamming the battery in backwards.

Paul

 

[Unknown]

Of course. That is a protective device. It is to protect the item from
people who install batteries
backwards. I repeat, that is the dumbest thing you can do (Put batteries in
backwards)..
"Paul" <nospam@needed.com> wrote in message
news:hvivo7$41h$1@speranza.aioe.org...
>> > "Jose" <jose_ease@yahoo.com> wrote in message Where can I read about
>> > this method of resetting the CMOS by inserting
>> > the battery backwards for 20 to 30 minutes to bleed off the current?
>>
>> Unknown wrote:
>> You can't read about putting the battery in backwards because it doesn't
>> exist. That is about the dumbest thing you can do on anything with a
>> battery.
>
> There is a diode in that path, that also functions as
> reverse polarity protection. Go to page 18 of this document, and
> look at diode D3 in the bottom left hand corner of page 18. if
> the battery were reversed, the D3 diode would be reverse biased,
> and the current could not flow.
>
> http://www.intel.com/design/chipsets/designex/BXDPDG10.htm
>
> Also, as a result of that diode, plopping the battery in
> backwards, isn't that effective. The provided CMOS jumper,
> applied to the three pin header shown in that schematic, is
> effective at doing its job. It won't take long to
> drain the CMOS well. It's a bit harder, on the motherboards
> that provide solder pads and no header pins, to consistently
> hold the connection long enough, to complete
> the draining. But if you have a header to work with,
> that is just as good at sitting in a holding pattern, as
> jamming the battery in backwards.
>
> Paul

 

[Jose]

On Jun 19, 1:45 pm, Paul <nos...@needed.com> wrote:
> > > "Jose" <jose_e...@yahoo.com> wrote in message
>
> > > Where can I read about this method of resetting the CMOS by inserting
> > > the battery backwards for 20 to 30 minutes to bleed off the current?
>
> > Unknown wrote:
> > You can't read about putting the battery in  backwards because it doesn't
> > exist. That is about the dumbest thing you can do on anything with a battery.
>
> There is a diode in that path, that also functions as
> reverse polarity protection. Go to page 18 of this document, and
> look at diode D3 in the bottom left hand corner of page 18. if
> the battery were reversed, the D3 diode would be reverse biased,
> and the current could not flow.
>
> http://www.intel.com/design/chipsets/designex/BXDPDG10.htm
>
> Also, as a result of that diode, plopping the battery in
> backwards, isn't that effective. The provided CMOS jumper,
> applied to the three pin header shown in that schematic, is
> effective at doing its job. It won't take long to
> drain the CMOS well. It's a bit harder, on the motherboards
> that provide solder pads and no header pins, to consistently
> hold the connection long enough, to complete
> the draining. But if you have a header to work with,
> that is just as good at sitting in a holding pattern, as
> jamming the battery in backwards.
>
>     Paul

Yes - I have seen that diagram before. I like schematics.

I think I would just use the jumper, If the OP would comply with the
request for system make and model or msinfo32 info, we would be able
to look up a diagram and advise exactly what to do. The correct
questions have been asked, but the answers are not coming.

I was just trying to figure out how this put the battery in backwards
idea came about. It sounded astonishing.

 

[Amanda]

"Jose" <jose_ease@yahoo.com> wrote in message
news:099ac1fa-70b5-4002-9f8a-ef94337afe0f@z10g2000yqb.googlegroups.com...
On Jun 16, 6:20 am, Linus <Linusv...@mspamn.com> wrote:

Where can I read about this method of resetting the CMOS by inserting
the battery backwards for 20 to 30 minutes to bleed off the current?

I'm not sure about that either, you'll have to check with Linus, just a few
threads up.