Sorry about the delayed response. We are all volunteers here and sometimes things slip past us.
The file that AVAST flagged is in the System Restore, a protected windows folder. This is used when you have to roll your computer back to an earlier stage.
The best way to remove those files is to flush your restore posts. The easiest and safest way to do this is
- Go to Start > Programs > Accessories > System Tools and click "System Restore".
- Choose the radio button marked "Create a Restore Point" on the first screen then click "Next". Give the R.P. a name, then click "Create". The new point will be stamped with the current date and time. Keep a log of this so you can find it easily should you need to use System Restore.
- Then use Disk Cleanup to remove all but the most recently created Restore Point. Note: The link provides directions for XP Pro. If you have XP home, disk-cleanup starts automatically. Please let it finish calculating possible space to free, then click on the More Options tab as instructed below.
- Go to Start > Run and type: Cleanmgr
- Click "Ok".
- Click the "More Options" Tab.
- Click "Clean Up" in the System Restore section to remove all previous restore points except the newly created one.
I am concerned, however, that unless you recently completed a disinfection process that you have other infected files.
What security programs do you have installed besides AVAST? Please name them.
What other issues are you experiencing with the computer?
What is your operating system: Windows XP, Vista, etc.?