
Mac has Time Machine that allows you to back up your entire Mac, including system files, apps, music, photos, emails and documents. From the list you can select restore points to a state before you were experiencing the problem.Windows uses a restore utility that automatically backs up selected system files. Safe mode is only necessary if initial scans fail, in most cases Safe Mode is not required to clean a Mac.When you first start your computer, hold down the Shift key.Select Troubleshoot -> Advanced Options -> Windows Startup Settings.When you first start your computer, hold down the Shift key to boot into the Recovery Environment.See below for instructions on creating a recovery drive. You can also boot from recovery media stored on a USB drive.Or if you’ll need to use the Internet, select 5 or F5 for Safe Mode with Networking. Select 4 or F4 to start your PC in Safe Mode. After your PC restarts, you’ll see a list of options.


When you first start your computer and you get to the sign-in screen, hold down the Shift key while you select Power -> Restart.Safe mode only loads the drivers needed to operate windows, so any potential viruses will not load in this mode. The best way to scan a computer for viruses is to boot the computer in safe mode. Follow the instructions below to clean up your computer and keep it secure.
