Windows 7 is running buggy

[Justin The Terrible]

It randomly kicks me off of IRC and logs me out of forums. One of my emails sent a spam link to all my contacts advertising Viagrow?... Most sites time out while trying to connect to them, but they work fine on my mom's pc...I scanned with spybot and avast and both turned up nothing. I downloaded Kaspersky(trial) and I am scanning currently. I would really not like having to reinstall windows 7. I have a lot of games installed and reinstalling would be a lot of time.

specs:

Intel core 2 quad 2.66ghz
2048gb RAM corsair 1033mhz
evga 780I Mother board
Nvidia 8400gs
creative audio sound card
1tb hitachi Hard-disk -windows 7 on it
160gb westgate - linux on it
Asus dual function optical drive.
Windows 7 64bit

[Justin The Terrible]

Kaspersky finished scanning and found nothing as well....

[tashi]

Hello Justin The Terrible,

If the computer shows signs of infection, please see this forum's FAQ to post a preliminary DDS log: "BEFORE you POST"(READ this Procedure BEFORE Requesting Assistance) (http://forums.spybot.info/showthread.php?t=288)

Then start a new topic and a volunteer analyst will advise you when available. :)

Best regards.