If your PC restarts unprompted, freezes, or programs crash, this could indicate a RAM problem. We'll show you how to use the memory diagnostics tool to find out whether the RAM really is the problem.

If Windows Memory Diagnostic Tool is stuck or freezes at 0, 21, 90, 99 % or is taking too long processing its operation, then see this fix.

Windows Memory Diagnostic Tool is used to test memory or RAM and helps figure out problems if running slowly, freezes, hangs, displays a blue screen, or reboots.