Cptbushido

Hi, i'm having the same issue with you. But i did more than you but still not manage to solve it. Mine is P150SM with GTX780M. Old but still rock solid until yesterday. I've never touch the BIOS not the EC. It still at stock. I've done re-pasting both CPU and GPU. -I've tried re-seat the ram, i even remove both the ram and the problem still the same. -I'm able to boot in windows 7, then it started to flash. -Problem also happened on Bios. -I've tried to boot with all mechanical drive, msata, RAM, even GPU removed.. and it still Beep and shutdown (No display due to no ram inserted). -I'm about to purchase CPU and GPU fan replacement, which some suggested it can be the issue. I read on another thread that for Clevo, if the bios unable to detect GPU it share the same error as Overheat. So i not sure whether it's my GPU dying.. or the board or EC FYI= I got HW monitor installed, the lowest temperature i got before it start beep are CPU <37C and GPU <35C .