Hello all: Summary = disabled entries in start up menu, messed around with BIOS, cannot get into safe mode now! Idiot. Details = installed a new printer last week (Dell 1320cn) and PC then slowed down. I therefore disabled the entries relating to Dell in my start up menu, using CCleaner. Now the boot process gets as far as â€œ4 devices IN â€“ WIN iAPPâ€ then â€œChecking NVRAMâ€ then goes to the â€œWe apologise for the inconvenience, but Windows did not start successfullyâ€¦â€ At that point it offers me options of: Safe mode or Safe mode with networking or Safe mode with command prompt or Last Known Good Configuration or Start windows normally. The SWN is the one highlighted, and the arrows will not allow me to move and select any other choice. Iâ€™ve used F2 > Setup and adjusted boot preferences to start from a CD, expecting to be able to use my slipstreamed XP + SP2 disc. PC tries to start that way, displaying â€œChoose any key to boot from CDâ€ but when I do hit any key, it returns to the screen above with the options that I again cannot choose. Iâ€™ve reset the BIOS to 1st choice boot = HDD I cannot get past this screen, in order to reopen CCleaner and enable the Dell entries. BIOS is P4i656 P1.30. Machine is XP + SP3. AV is Trend Micro Internet Security 2009 and I did a full scan only the other day. Just scheduled, not because I suspected anything. Checked â€œHijack thisâ€ at the same time â€“ Iâ€™m no expert on that at all but saw nothing untoward. All help gratefully accepted!