Might be time for a reformat, but try this:
1. Get a good anti-spyware/adware program. Spysweeper and Spybot Search & Destroy, and Ad-aware are good ones.
2. Get a good anti-virus program. AVG and Anti-Vir are pretty good, and free.
3. Get a registry cleaner. CCleaner is good.
4. Get a good disk defragmenter. O&O Defrag 2000 is free and very good (the default one that comes with Windows is a joke compared to O&O).
Go to Start -> Run -> Type msconfig. Click the 'Start-up' tab, and un-check all the programs you don't want to start when you start your computer. Everything can be disabled and it will still run properly, it's just what you want to start automatically for your convenience.
Well, try all that and see if it helps.
Intel Q9400 | Gigabyte EP45-UD3P | G.Skill 2x2GB DDR2 1000 | XFX HD5870
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