I know, but quick antivirus scan can be useful from time to time and furthermore after completely disabling Windows Defender you get that annoying window, informing you that WD is turned off, every time the computer starts. Getting Started if You Have a Windows XP Computer. Avast Free Antivirus / Premium Security (legacy Pro Antivirus, Internet Security, Premier), action=display threadid=1988 start=msg13351#msg13351. In the Task Name field, type a name for the scan, then select the locations you would like to be scanned, and then click Next. Targeted Scan: Scans folders or drives that you specify. Set-MpPreference -ScanScheduleQuickScanTime Scan_Time. Coming to the topic 'boot time defrag', it is done before the computer actually boots up.

Our online virus scanner will help you identify and remove malware. You would think the same is true for the common time of six weeks confinement to the boot. To reset the quick scan schedule, run the same cmdlet command without the time parameter.