If it is Autorun.exe then it would make a difference.
Go to this forum
http://www.thecomputerforums.co.uk/f49/
Post a Hijackthis log in there. It should only take a minute to rule in or out malware.
Download and rename HijackThis (HJT)
- Double-click on HJTInstall.
- Click on the Install button.
- It will automatically place HJT in C:\Program Files\TrendMicro\HijackThis\HijackThis.exe.
- Upon install, HijackThis should open for you.
- Close HijackThis and rename it.
- Go to C:\Program Files\Trend Micro\HijackThis.exe
- Right click on HijackThis.exe and select Rename.
- Type in sniper.exe and press Enter.
- Right-click on sniper.exe and select Send To > Desktop (create shortcut)
- From the desktop open HiajckThis.
- If using Windows Vista, be sure to Run As Administrator
- Click on the Do a system scan and save a log file button
- HijackThis will scan and then a log will open in notepad.
- Copy and then paste the log in your post.
- Don't have Hijackthis fix anything yet. Most of what it finds will be harmless or even required.
Even though we have renamed HijackThis to sniper, we will still refer to it as HijackThis or HJT.
Post this in the Security forum from the link above.