The GPU failed, but I'm not sure if the PSU caused it.
The GPU failed, but I'm not sure if the PSU caused it.
Hello! This is my first time posting here, and I’m not very experienced with computers. I understand some basics but don’t know everything. English isn’t my main language, so if something doesn’t make sense just let me know.
My system specs are: i5-3470 processor, 8GB RAM at 1600MHz, dual-channel Mini ATX case from Asus (exact model not remembered), an RX 480 nitro++ OC GPU, 8GB VRAM, Corsair CX750 power supply (green label likely older), and around three days ago I was playing Overwatch 2 with a friend. The game was running slower than usual, which was something I’d experienced before.
About five minutes into the match, the rounds ended and I was on the hero selection screen. I’ve noticed temperatures were usually higher there, so I checked them regularly. They reached 75-78°C. Just before the screen went black, my PC stopped working, but it wasn’t a total blackout because the router was still active. I thought it might have crashed, but there was no display left. After checking, I found no signs of burning and pulled out the GPU. There was no smell of damage.
I immediately suspected the GPU died, but also wondered if the power supply unit could be the cause since the PC shut down suddenly. I didn’t see any artifacts or strange noises. That night I asked a friend to test the GPU, and he confirmed there was still no video output.
Today I was looking for a new GPU and started thinking about whether my PSU might be the issue, especially since the CX series has had problems before. I didn’t test the video output because my motherboard doesn’t have a direct HDMI or DVI connection. I did try booting to desktop by pressing Alt-F4 and Enter repeatedly, but the PC still powered off.
If anyone can help, I’d really appreciate it. I want to buy a new GPU but am worried it might fail because of the PSU. I’m a student on a tight budget and don’t want another GPU to break. Also, I tried clearing the CMOS and reinstalling RAM and connecting the power cables, but nothing worked.
Thanks!
If the GPU isn't functioning in any setup, it's a serious issue. This could mean the old model is beyond repair due to age, not a faulty power supply or board. I've used a CV600 PSU for over eight years and it's remained operational—just kept as a backup during tests.
Purchase a refurbished GPU from a trustworthy Chinese seller and observe the results. If you're hesitant about buying new, consider the RX 570s priced around USD 60.
Really? You're welcome! I've talked to a friend who has an extra RX 570, and they're willing to let me try it out to check everything.