1. When an infected file is found by an antimalware program, should I reboot and, if so, when should I do so (ie after moving the bug to quarantine, after deleting the bug from the quarantine folder, both, or neither, etc.)? And in this scenario, if rebooting is required, should I reboot into safe mode and, if so, under what circumstances should I do so?
Reboot to normal mode if required for removal(delete on reboot)
For question number 2, it's best to scan the restore points as the log will give clues on the infection, it's rather complicated to explain tho.
After being reasonable sure you have removed the infection it's best to purge system restore
Now you should Create a New Restore Point to prevent possible reinfection from an old one
. Some of the malware you picked up could have been backed up, renamed and saved in System Restore. Since this is a protected directory your tools cannot access to delete these files, they sometimes can reinfect your system if you accidentally use an old restore point. Setting a new restore point AFTER cleaning your system will help prevent this and enable your computer to "roll-back
" to a clean working state. 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.
- Go to Start > Run and type: Cleanmgr
- Click "Ok". Disk Cleanup will scan your files for several minutes, then open.
- Click the "More Options" tab, then click the "Clean up" button under System Restore.
- Click Ok. You will be prompted with "Are you sure you want to delete all but the most recent restore point?"
- Click Yes, then click Ok.
- Click Yes again when prompted with "Are you sure you want to perform these actions?"
- Disk Cleanup will remove the files and close automatically.
Vista Users can refer to these links: Create a New Restore Point
and Disk Cleanup