long time ago i overclocked the cpu to 3.6ghz (1.55v), and it stayed semi stable for 1 year, i got used to it, but about two weeks ago while playing different games my screen randomly went to standby and sound loop and then lock up, so i had to restart the pc, i downclocked the cpu to 3.4ghz (1.45v) and it worked fine for around one week, now its happening again, so i decided to downclock the cpu to 3ghz (1.37v),and It Happened Again. i went to the bios and loaded default options (stock) and guess what?....it happened again, monitor went stanby and sound loop, lock up while gaming for about 15 mins
What is causing this problem? is it the mobo or the cpu? would clearing the cmos-changing the OS fix the problem?
i have the latest graphics drivers
windows vista updated
checked for overheating
checked power saving options
replaced the gfx card
cleaned the mobo, gfx card, cpu heatsink
im using integrated souncard
Temps are fine, and if you're at stock settings now, so you've either got a cpu/mb problem (as you've suggested) or something else going on.
Some of the events you describe are failures during games. The other failures have no event description, so I don't know what the computer was doing when it failed at those times. Might be games, might be something else running.
My concern here is you are changing cpu speeds in an attempt to solve the problem. That's certainly to be applauded if the cpu is at fault and if reducing speeds will correct the problem, but if it's not then that course of action is not relevant and will have no impact on system stability.
Either your cpu and/or your motherboard is going through it's death rattle, or it's not, so let's find out. Run Prime95 for 30-60 minutes. If you can guarantee 100% failure when gaming after 15 minutes, then giving the cpu a load for longer should give you an indication of cpu failure. Longer run times are better then short.
Keep graphics, card drivers, games, etc out of this process. Record your voltages and both mb and cpu temps as you done above.
If it never falls over no matter how many times or how long you hit it with Prime95 and all the indicators are within limits, then you can eliminate the cpu and mb.
After Prime95 with no failures, I'd also try PCMark05 as well. Prime95 for 30 minutes, PCMark05, Prime95 for 30 minutes, etc.
Still good? Substitute 3DMark06 for PCMark05 in the above routine.
Still good now? Play your games. Look to your video card and/or drivers for the problem. PSU is the only other component I'd check, if in doubt.
Good results. Give it a thrashing with your games for a few days, then if everything's good, increase it to your overclock settings. It might have all been just a bad dream...
THANKS SO MUCH for all your help, i really apreciate it,,,,,, thanks for the tips,
just one question, do you believe that clearing the cmos solved the problem?
and one more thing, is my mobo and cpu ok?