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My computer suddenly became slow two days ago, without any apparent reason. I thought it was a malware or something like that, so I formatted my computer, then reinstalled Windows 7 with the official CD, but it still is really slow! I checked my HD with HD Tach, my memory with Memtest86+, and everything seems to be OK. I ran an Hijackthis scan, and here is the log:

If someone could help... I really don't understand why it is running so slowly! (the "missing files" in the hijackthis report are - from what I found - an error with HJT/Win7

Thanks in advance!

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check your bios settings, be sure something did not inadvertently get changed, or just load bios defaults. – Moab May 13 '12 at 16:55
what kind of HD you have? – Rookie May 13 '12 at 17:10
it's a Hitachi HDP725050GLAT80 3.5" – asde May 13 '12 at 17:56

Check your CPU temp & fans, if there is an overheating issue it may have throttled back the CPU

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