no matter what i did, xp wouldnt boot from disk, i checked bios settings & checked multiple disks.. and it still wouldnt boot from disk. but yet the minute i put vista in, it booted from disk no problem.. so it wasnt a hardware issue.. because how could it be a hardware issue if it boots other disks besides xp? so therefore, i installed vista. and now my computer works. people argue that it wasnt the update that caused it, and say "its your hardware" or "the update did that because you had malware" im sorry but i dont think so. my hardware was and is fine. also i take very good care of my pc.. i have antivirus, good firewall, and ANTI adware,malware, spyware programs. that are actually trusted.. so until im proved otherwise, its an update issue.. i just think its funny and ironic, people tell me its a hardware issue, or i dont have the settings correct, when it works perfectly fine with an os that isnt xp.. or the fact that i personally know alot of people who have this issue, that couldnt boot from disk on 10 xp disks. but can boot perfectly fine on one of the newer os'.. and they were all told the same from microsoft.. that it was hardware, virus, or their fault. that it wasnt an update.. and people constantly argue that its not the update, that people dont have that problem.. but if anyone googles "bad xp update" or "bad xp update bsod" its all over the internet. people asking for help.. people not understanding how come just a minute ago their pc was fine, downloading updates, and the next its crashed, stuck in a reboot loop, they have the bsod, and cant boot from disk. and everyone that cant boot from disk such as myself and a few people i know.. lost everything on their harddrive unless their willing to pay 1200 or more, according to size of the harddrive..