What spyware and virus scans have you run?
Why do you have your firewall turned off?
Are you behind a router?
Although you have run a virus scans, have you used any external one as your virus protection could be compromised.
I use Trend Micro often
http://housecall.trendmicro.com/Also if you don't all ready Spybot search and destroy
http://www.safer-networking.org/en/index.htmlOk now that is covered how many process are running when you hit Crtl-Alt Del, bottom left corner. Most optimized systems can get away with running around 30 or less so check that out also
I have mine at 24
But I have seen a system with 72!!! you want to talk about a slow system.
Ok good luck!
Hope something helps
**EDIT**
PS. there is one other thing you can check, see if your IDE controller is using DMA and not PIO.
Your saying what the heck is he talking about.... LOL
Go to your device manager * windows key and Pause/Break key* (a nice short cut)
Click on the hardware tab - click on device manager - click on the + sign next to IDE ATA/ATAPI controlers - this will probably be different on every system but click on the controller device and right click properties. whew these are getting to be long post.
But click on the tab that says primary channel or click on one that has information on DMA/Transfere settings. If this is on PIO you need to change this to DMA.
Just something else to check on
Ok I am done and going to bed
GOOD LUCK
Till tomorrow