Slow Computer, ESETscanner finds worm, terminates halfway w/o deletion

Hi!

My computer (Windows 7) has been running incredibly slowly lately. I ran Malwarebytes on it; nothing was found. I then ran ESET scanner on it twice, and both times about 40-50% through it was terminated suddenly by Windows with a worm found in the threats list. The threat itself was not deleted upon termination. I think it was a Win32 file that was infected... I'd appreciate any help that you can offer.

Thank you!

Amy

Edit: I forgot to mention that I ran SecurityCheck and it reports 1% disc fragmentation. I have no idea what that means.

via Bleeping Computer Last 20 Posts http://www.bleepingcomputer.com/forums/t/509105/slow-computer-esetscanner-finds-worm-terminates-halfway-wo-deletion/