The Windows memory diagnostics tool requires a restart and performs tests during the startup process. Normally it works in standard mode and performs two test runs before the computer restarts and ...
However, this is the rarest condition after upgrading a RAM. Test your RAM by using the Windows Memory Diagnostic Tool. If the RAM is faulty, replace it. That’s it. I hope this helps.
This used to be a major problem for Windows users in the early 1990s with the 16-bit versions of Windows. However, you can still run out of memory if you have too many applications open.