I brought it to repair 2 times, and im pretty sure it's not the overheat problem, tho it keeps showing up. 2 hours before this problem i installed a program to put all 4 cores to 100%. Tho it wasnt hot, or it was average like everytime. I had this problem (the 90D one) other times, but i fixed it by buying a laptop stand and replacing the fan. But the startup repair its like the second time. What should i do? It also does a little beeping sound when turning off.