Desktop restarts randomly and will not reboot, instead it produces long beeps. I checked the Windows event logs for errors and found none. If you do a hard shutdown, and then turn the computer back on it boots normally. If you restart it, you get the long beeps and it will not boot. I checked the beep codes for the bios and it indicated an overheating CPU. This is not the case as the CPU is at a normal temp.
I moved on to troubleshooting RAM, I tried reseating the memory sticks, same thing occurs. When removing one stick or the other, windows fails to boot. I also tried other compatible RAM sticks and windows fails to boot with them.
Anything else I can try?
Loss of thermal grease and a loose heatsink will quickly overheat the cpu without you noticing.