Need help pinpointing

[Hemsky]

Whenever I load windows XP, it takes me about 6-7 minutes just to get to the desktop. What happens is the drive stops working and just sits there for about 4-5 minutes doing nothing. The HDD light is on but theres no activity. Then out of the blue it decides to load. I've tried BootVis but theres no indication of the culprit or I'm not reading it right.

Secondly, if I leave my computer on idle without any mouse movements or activity the whole system will begin to freeze up the minute i return. It was start by responding 100% until I close a window then it will not close, and then the start menu dies and eventually the mouse hardlocks as well. I have a feeling most of this has to do with a bad HDD and have no problems replacing it. I just want to know if there is anything else I can do to help regain stability. I am overclocked right now @ 3.2 but regardless if I'm OC'd or at stock I still have the same problems.
My specs as follows

E6600 @ 3.2 Ghz 1.3Vcore
PC2-6400 XMS2 Dominator 2x1gb 2.1V
eVGA 680i SLI
2x7900gt 256 SLI
SB audigy 2
Scythe Ninja Plus
200 GB Seagate Barracuda
OEM LG DVD-RAM

 

[jkresh]

sound like malware (even if you dont see it in bootvis), trying running any scanners you have or any of the web scanners (some of the top programs have free scanners) start with spybotsearch and destroy and addaware's free version.

 

[Hemsky]

It had found some cookies and data miners. Removed them and will try later today to diagnose further. Thanks for the help.

 

[Kenshin911]

If that doesn't work, try memtest86. (It's a free program.) It will tell you if your memory is good or not.

 

[MagnusTheBrewer]

Is there a possibility that your rig is looking for something on a local network?

 

[Hemsky]

Kenshin: Memtest passed several tests. I thought this was the problem at first and adjusted voltages as well at speed with no improvement.
Magnus: I disabled network boot priority and still have the same long boot time.

I'm at a loss as to what it could be. I have had this HDD for about 2 1/2 years now and I'm pretty sure its going to fail on me within the year. I'm assuming it is a HDD issue because it was a fresh XP installation when the problems started to arise. I do not want to reformat again unless its to a new hard drive. I also defragged in safe mode and about 43% of the files are defragmented. But most of those files are associated with games and such. It will not defrag anything more than 43%.