I was previously using old thermal paste scrapings from heat synks cut with toothpaste and it was working for awhile but then I started noticing this last month the cpu would sometimes get hot like into the 70's. so I bought fresh thermal paste cleaned the old thermal stuff off with a damp but not soaked wash cloth and added fresh thermal paste. I started the desktop and saw for under a minute the cpu temp went up to 92. but it dropped down the 60 something afterwords. I had a very gentle overclock enabled and from that point on the computer was constantly freezing so I removed the over clock no improvement. so I reenabled it, No dice, so I went to turn it off again and adjust some bios settings and then the thing developed a problem where it would automatically shut off before it could start, so I removed the cmos battery and left it without power for an hour and now it turns on but displays nothing and I'm using an asus z97 pro gamer and the red light that is for the cpu errors lights up when ever turned on and the cpu fan does not spin. I tried removing the cmos battery and leaving the computer off for 3 days but now it's doing the same thing still. Did I cook my processor somehow or is there something else wrong with it? the processor is 5 years old btw.