The computer fails to start unexpectedly during a nighttime period.
The computer fails to start unexpectedly during a nighttime period.
Hello, your wife's setup is a prebuilt CyberPower PC with Windows 11. It features an Asrock B550M-C motherboard, a Ryzen 7 5700 RTX 4060 Ti, 16GB of RAM, and an SSD. The machine tends to stay on most of the time but is shut down at least once weekly. Today she tried using it for the first time; the screen was black while the RGB stayed active, so she turned it off. When she powered it back up, there was no display output, though the CPU and RAM lights were still lit on the motherboard. Both her keyboard and headset didn’t light up, but their RGB did, and the fan’s RGB also illuminated. I’ve checked and tried several fixes—unplugged the CMOS battery, held the power button for a minute, let it rest, then reinserted it. Replaced the GPU and RAM sticks, verified the monitor and display cable connections, and confirmed all cables were securely plugged in. The 24-pin connector and other ports worked fine. The system is only two years old. Any suggestions on next steps would be greatly appreciated.
Hello, Have you tested with just a single stick of RAM? Instead of removing the CMOS, could you try using the reset pins on the motherboard? Also, as a final attempt that sometimes worked, re-seating the CPU. Edited November 6, 2025 by BrokenGodOfSleep
I attempted to reset the pins, used a single RAM stick, and tried both RAM sticks in the A2 slot just in case one was faulty. I also re-seated the CPU. Nothing changed in its behavior, though I wanted to note that I disabled the on-board graphics with the GPU removed and checked without any storage connected—dram and CPU lights activated instantly when power was pressed. There’s no delay, which makes me wonder if it helps. I don’t have another AM4 CPU or motherboard to test with either.
It seems you're looking for ways to verify and possibly replace your CPU. You might want to consider getting an AM4 processor to test your system. I'm quite concerned about the condition of your CPU. If you need a backup, visit a repair shop for an estimate. A quick on-site check should be affordable or even free. If you lack nearby options, buy a new CPU and inquire about return policies for refunds. You can also review Amazon's return guidelines if you don't have a local store. When the computer fails to boot into BIOS, it's usually the CPU or motherboard that's faulty. Testing the CPU is essential to confirm its functionality. Your device may no longer be under warranty—check with AMD to see if they extend coverage to OEM models. Good luck!