Question Black screen without peripherals, works sometimes?
Question Black screen without peripherals, works sometimes?
This behavior is quite unusual
After switching my rx 6600 to a rx 6750 xt (second hand, two months old), when I power on the PC or wake it from sleep, nothing appears on the screen. The peripherals are off, there’s no disk activity, and only the fans and a decorative light on the motherboard function. Occasionally the system reaches the screen with the BIOS logo, and sometimes it boots fully and works normally. When it does boot completely, everything functions properly, but I can’t put it to sleep or delay it without the issue recurring again.
System:
Mobo: gigabyte b450m ds3h
Psu: corsair cv 650
Cpu: ryzen 5 5600x
Gpu: rx 6750 xt
3 ssds
Things I attempted:
- Reseating RAMs
- Using old RAMs
- Booting without the GPU
- Removing the CMOS battery for 30 seconds
- Checking if cables are loose, then reconnecting (except the main one on the motherboard, which is too tight and causes bending)
- Booting without SSDs
- Updating drivers and BIOS when it boots at the hour
If you reinstall your old RX 6600 into the build, will the system function properly? The problem might lie with your used GPU (RX 6750 XT). Since your CPU lacks an integrated graphics solution, it won’t show anything when the dedicated GPU is removed. A low-quality power supply unit isn’t recommended for any PC. I’d prefer a better PSU such as Seasonic Focus or Corsair RMi/RMx in the 650W range. It’s possible the issue stems from your PSU itself, especially after increasing the GPU power from 132W to 250W. The fact that your existing Corsair unit struggles to manage it isn’t unexpected. Replace the CMOS battery with a fresh one.
Thank you for your reply.
For the igpu, I didn't anticipate seeing a display but was only checking if power reached the peripherals without the GPU.
I plan to replace the PSU.
I mentioned earlier that without a dedicated GPU, your PC won't function properly. Therefore, how can you confirm improvements if you didn’t notice any video output? It might be related to the motherboard (MoBo), the CPU, or even the RAM.
For RAM, try testing the system with just one stick installed. It’s unclear whether a single faulty stick is the issue or if two sticks are incompatible. This determination would require careful testing, which can be time-consuming.
I recommend labeling each stick (for example, with a sticky note) so you can identify them easily. Then proceed with the tests:
- Check DIMM 1 in slot 1 – image appears – DIMM 1 in slot 2 – image – DIMM 1 in slot 3 – image – DIMM 1 in slot 4 – image.
- If the new RAM is a pair, test:
- DIMM 2 in slot 1 – image
- DIMM 2 in slot 2 – image
- DIMM 2 in slot 3 – image
- DIMM 2 in slot 4 – image
This method, though laborious, is the only way to verify RAM problems at the hardware level. Ideally, you should see the image across all eight tests. If successful, both sticks should function independently in any slot of a MoBo. However, if both sticks fail together when paired, try testing with two sticks simultaneously, such as:
- DIMM 1 in slot 1 + DIMM 2 in slot 2 – image
- DIMM 1 in slot 1 + DIMM 2 in slot 3 – image
- and so on...
This process is quite challenging but necessary.
Even without the GPU, it should emit a sound if the motherboard speaker is connected, correct? When it fails to work, it doesn't boot properly. I didn't assume it was an RAM issue since during one test with MemTest86, no errors were detected.