I have an ASUS M5A78L-M LE/USB3 motherboard with an AMD FX-8350 processor. I tried to overclock my cpu from the stock 4.00Ghz to 4.2Ghz. After it, I ran a stess-test and my cpu was running on a constant 4.0Ghz, but it was around 55C all the time, after like 2-3 minutes I got a blue screen, and my pc restarted. I got into the BIOS again and got my cpu back to 4.0Ghz. Then I did another stess-test, and I saw that my motherboard is on 60C and it just kept going towards 65C in like 15sec, after it my cpu's clock speed dropped to 1.5-1.7Ghz and I stopped the stess-test. What could be the problem?