This vid contains proven tips that help fix error code 0x81000203 when trying to run the System Restore setting in your Windows.
Before you go, first check if System Restore is turned ON. Solution 1: make sure that both Microsoft Software Shadow Copy Provider and Volume Shadow Copy are running. Solution 2: Disable YOUR OWN security software on the system. For example... Other voice: If you're still using TuneUp Utilities 2009 / 2010 / 2011 , uninstall that app using the recommended uninstall tool in this video. Solution 3: check in safe mode if you are able to open system restore and do you still get any error message, then Perform a SFC Scan (command: sfc /scannow )