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CPU: AMD Phenom II X6 Black 1090T MOBO: Gigabyte GA-880GM-UD2H RAM: Trascend DDR3 1333MHz 2x2GB PSU: Coolermaster Silent Pro 700Watt no graphics card nothing overclocked 500GB HDD I tried before to boot with one memory stick, i even placed in different slots, but no BIOS screen showed up (however, I didnt do these with the specific order you said them, I will try this way) I ever tried to boot with no memory sticks on, waiting to hear the characteristic multiple beeps from mobo (as I read), but nothing was heard I tried to boot from cd or boot from HD, to run Hiren's CD or UBCD, but couldn't logon to BIOS (although fans were working) from USB I haven't tried, but the problem is that I now can't even enter BIOS, I 'll try the Clear BIOS jumper trick, but doesnt it have the same effect as the battery removal method? anyways, how do I clear CMOS from the jumper? I see to vertical small metal cords, do I have to short-circuit them? how do I do it exactly? do I need any tools? EDIT: okay I saw some youtube vids about it, there must be a jumper in the mobo box and I fit it in the vertical cords, but for how long to completely discharge it?

is there a diagnostic algorithm, because I cant rule out any hardware part, being sure that it works 100%

hi~! I have a major problem with my pc, here is the history: I bought it few months ago, everything was okay I then installed a new more effective cpu cooler, it worked afterwards flawlessly for some months few days ago, it suddently freezed and after I restarting it, it freezed at WinXP logon screen (where the green progress bar moves), even if I removed all the usb deviced then, I chose to restart in 'safe mode' and I got the (popular - judging from the reports on the web) freezing at the mup.sys after some unsuccesful restarts, the pc ended not being able to logon to BIOS (the BIOS screen did not appear) then, I took the pc to the service but they told me that there was nothing wrong! (it was booting okay, with my own hard drive) then I took it back home, I connected everything as previously (usb, my drive, etc) and it worked excellent but after few days it did the same freezes! and now I cant logon to BIOS I cleared CMOS (by removing battery), and I managed to get to the CMOS recovery screen, I chose default CMOS settings, but again the PC freezed after I connected my hard disk or my dvd drive I can't see what is wrong! any idea? now and I am writing from a net cafe, so please advise asap, thanks!!