I've recently built a new PC, but I'm running into an issue where it starts up and then powers off after about 20 seconds. I've double-checked that all connections are properly seated, and I've even removed everything—just the CPU is left in. I tried resetting the CMOS, but that didn't help. I've also ensured that there are no damaged pins on the motherboard. Here are the specs of my build:
- CPU: AMD Ryzen 9 9950x
- PSU: Thermalright TG10O0-W
- Motherboard: MSI PRO B850-P WIFI.
On a side note, when I had everything connected initially, the PC would power on, but there was no signal to my monitor, and I noticed the EZ debug LEDs were red for the CPU and yellow for my RAM (TEAMGROUP T-Force Delta RGB DDR5 RAM 32GB). Any help would be appreciated!
1 Answer
Have you tried waiting a bit after it shuts off? Sometimes new builds will reboot a few times as they configure the memory.
Also, don't run your CPU without a heatsink; it can overheat really quickly, leading to shutdowns. Try updating the BIOS if you haven't already—there's usually a flashback feature for that. And you might want to remove your GPU and see if it boots via the motherboard video outputs instead, just to rule out any GPU problems.
I waited about 20 seconds after it powered off. I stripped it down to just the CPU and motherboard to see if that helped.