First time it happened was a few months ago. After it happened I went into safe mode, ran WMD, and it was done my computer restarted and says it found no error. And 3-4 hours later it happened again so I went to check my computer. I had thought it was too hot so I took the side panel out and evne installed a cooler for my ram. It didn't happen again for a few months. But then yesterday I got it 2 times and I've alreayd gotten once today. I don't know what to do I ran WMD 3 times already and says it found no error. This is getting annoying and it's killing my computer slowly by making me hold down the power button in order to turn it off. Help please.