How to test that a PC is stable and reliable?

Su
3

I would like to test on an older laptop, if it still works reliably and without crashes / errors, if it is busy for a long time.

Is there an easy way?

ca

Run Prime95 in the stress test for a few hours.

Su

Okay thanks! I'll take a look. I just noticed: You worked as a PC?

Ra

Programs like Prime95 or Memtest x86 can help.