ok so i went to update my BIOS after one of my games(call of duty: Black ops) was lagging badly and i did everything to reduce lag even though my computer could run it on high settings. BTW the lag was gone after i upgraded BIOS for the game i mentioned above.
So a friend suggested that i update the BIOS. i did and then after restart my computer would freeze but when i unplug a usb device from 2 ports grouped together it booted. Today i got the boot until i remove a USB device but now i get crashes in games. it also decided to install printer drivers
...again even though the printer has been working fine since the day i installed windows 7 x64 months ago. My version is not a beta or a RC its a full version fully updated with some minor tweaks like UAC turned off but nothing major that would cause startup to fail.
i know i dont have a virus or a rootkit. Thats the first thing i checked. This didnt happen till after i updated the BIOS.
so here is what i have done so far:
Startup repair twice(i chose the recommended option).....neither time it worked it just reverted it back two days.
did a antivirus,rootkit, spyware,etc... scan found only small stuff that wouldnt cause this much problems. in other words small stuff that i got rid of easily that is fairly common such as data miners and tracking cookies.
also ran combofix....didnt find anything.
next did a scan using Advanced windos Care 2 didnt find anything wrong with the disk or anything else.
also ran chkdsk also didnt find anything.
i know its also not a heating issue because monthly i blow dust out of the case and check for wires around the fans.
any ideas on what to do?
i ran out of options of stuff to do. i dont mind re-installed windows 7 but kind of want to use that as a last resort.
Also any ideas that require command prompt please make is a simpe to understand as possible please. i am not stupid in CMD just get confused easily.