weird system problem

[aggravated]

ok here's my situation: i have an amd tbird 900mhz on an asus a7v mb .. i built it maybe a month ago, it ran fine until yesterday - my boss asked me if i could try his 800mhz tbird in my system so that he could see if his was working properly, since his new system was giving him problems, and he had no other processor to test on his board instead, so when i got home i put the chip in, no big deal right? chip worked fine, system booted and ran perfectly - but here's the problem, after i put my 900 cpu back in, my system started behaving very abnormally, 9 out of 10 times trying to boot it up all the diagnostics appear as normal, but just before windows finishes loading it displays the following: "windows protection error. you must restart your computer..." - and the few times it did load properly (out of many tries) any high end applications i run crash in less than a minute or two, then after getting the computer to boot up again i ran only lower requiring programs like browser and irc, and the computer ran fine for the remainder of the day, but when i woke up this morning it was blue screened with windows having had an error .. computer boots up without any trouble into safe mode, but since i have no idea what is wrong i couldn't exactly do anything to fix it - even more odd, if i put his cpu back in it functions normally! and i know my cpu isn't overheated or anything either, because i've always checked the temp - so anyway, any suggestions would be very greatly appreciated, thanks

[llreye]

Perhaps try clearing the BIOS.
If you ran the 900 in Windows it may have changed something automatically without a way to change back when you switched in the 800. Might have to reinstall or install over the current OS.
-MKC

[sww]

I doubt this very seriously. IF windows had a setting for processor speed and kept up with it, all us overclocking types would be out of luck. I think it is more likely that his boss's chip was bad and caused a problem with his motherboard. Before I demanded an RMA for my motherboard, though, I'd go back to the BIOS and doublecheck all my settings...

Originally posted by llreye:
Perhaps try clearing the BIOS.
If you ran the 900 in Windows it may have changed something automatically without a way to change back when you switched in the 800. Might have to reinstall or install over the current OS.
-MKC

[aggravated]

thanks for the suggestions - when the problem first came up i did look through the bios but there was nothing there that i saw that would fix the problem, i was thinking yesterday that i'd try reinstalling windows and see what happens, but i haven't found my cd yet hehe, well any other suggestions would be great

[Ymaster]

Originally posted by aggravated:
thanks for the suggestions - when the problem first came up i did look through the bios but there was nothing there that i saw that would fix the problem, i was thinking yesterday that i'd try reinstalling windows and see what happens, but i haven't found my cd yet hehe, well any other suggestions would be great

Was his cpu faster or slower? Did you adjust your volts or sdram speeds in anyways?

Once you change the cpu's around, windows would update the info at boot. My guess is just maybe you zapped it with static?



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[llreye]

I stand by my orginal suggestion since there is a problem writing a hard drive's cache if the cache is large enough and if the CPU frequency is high enough on a Socket A CPU. I would expect either MS to have a windows update that could make such changes, or a BIOS change which might affect things.

IMO paranoia and constant vigelence is a good habit in troubleshooting.
-MKC