My PC had been crashing during gaming with a completely green screen and no error message. The crashes eventually stopped on their own, but the latest one happened while I was only on the desktop. Since then, the computer powers on with fans and LEDs working, but neither monitor receives a signal.
I disconnected peripherals, unplugged the system and discharged it, tested each RAM stick separately, removed the graphics card and tried the motherboard video output, swapped power and display cables, reset the CMOS, and left the PC running for an extended period. None of this restored the display.
The system has a Ryzen 7 7700, Gigabyte B650 Gaming X AX V2 motherboard, 32 GB of DDR5-6000 CL30 memory, a PowerColor RX 7900 XT 20 GB graphics card, and an MSI MPG 850 W power supply. What other tests can help determine whether the graphics card, motherboard, CPU, or another component has failed?
2 Answers
Check the graphics card power connectors, remove and firmly reseat the card, and make sure the card is fully locked into the PCIe slot. If the system displays normally when the card is removed and the monitor is connected to the motherboard, that strongly points to the graphics card. A VGA diagnostic LED on the motherboard would support that conclusion.
Since the Ryzen 7 7700 has integrated graphics, try booting with the RX 7900 XT completely removed and connect the monitor directly to the motherboard. Also clear the CMOS properly, inspect the CPU socket for damaged pins, reseat the CPU if necessary, and test with one RAM stick in the slot recommended by the motherboard manual. If there is still no display without the graphics card, the motherboard or CPU becomes more likely.
The system eventually booted normally after removing the graphics card and using the motherboard video output. The motherboard's VGA light was on, which makes the GPU the most likely failed component.
Reseating it did not help. The PC works normally with the card removed and the monitor connected to the motherboard, so the graphics card appears to have failed. I do not have another computer available to test it in.