
On Windows 11, if your PC is running sluggish and apps are crashing, or the system experiences a random Blue Screen of Death (BSOD), freezes, or reboots, the first thing you should check is the memory to discard a problem with any of the modules. This is not only because memory issues can make the device unstable, but also because they could cause data corruption and other errors.
If you suspect the problem is related to the system memory, you can use the "Windows Memory Diagnostic," a legacy tool that can perform many tests to check your computer's Random Access Memory (RAM) to determine whether one or more memory sticks have problems.