In your malware thread, mailprog
asked you to download and run ResetDMA.VBS
, did you do this already? If so then ignore my above advice.
Please download, install and run CCleaner
Click on Options then Advanced and uncheck Only delete files in Windows Temp folders older than 24 hours.
Click on Cleaner then Analyze to see how much junk has accumulated. Next click on Run Cleaner. This will get rid of a lot of accumulated temporary files that accumulate on your hard drive over time.
Don't use any of the other tools, especially Registry unless you know what you are doing and understand what registry items will be deleted.