ah missed the previous post my bad
PC was working, now monitor won't come on - details in text
- Thread starter Agony_Aunt
- Start date
Robert Maynard
Volunteer Moderator
Regarding the iGPU - do you have the relevant drivers installed?
For the BIOS to appear? I don't think that is relevant.
Robert Maynard
Volunteer Moderator
Ah. Odd that there's no video output from the motherboard video output when there's no PCI GPU installed in that case - especially after you cleared CMOS (which would presumably default to iGPU?).
Indeed. Totally bizarre.
Know the answer! Get a Mac!
Actually, best not. I had a similar problem and it wasn’t just a case of slipping a new card in
Was going to say - the last time I thought the monitor had broke it was the graphics card. I think I had an older GPU to test. Seems like you already came to the same conclusion.
Onboard graphics - not all CPUs have on-chip GPU, highest tier, high performance CPUs don't have integrated GPUs.
PCIe GPUs are very sensitive to power supply quality, get errors and even totally fails from unstable power.
Best option would be insert some simple cheap GPU in PCIe slot and try to enter to BIOS, but in Windows 10 and quick boot option active it's near impossible enter BIOS menu by F2/F10/Del (depends on motherboard brand). In this case clearing BIOS options by jumper will be necessary, after that BIOS will start on first available graphic port. Monitor and signal cable should be connected before powering PC for proper detection video output.
Source of this problem, (assuming cables and monitors are confirmed good) may be:
1. Bad/worn power supply.
2. Overheated and broken GPU. Don't test it in other essential system because of high chance to smoke other motherboard.
3. Dirty/corroded PCIe slot.
BIOS seems good (one beep after power on selftest), same for RAM and CPU - core hardware seems work fine.
PCIe GPUs are very sensitive to power supply quality, get errors and even totally fails from unstable power.
Best option would be insert some simple cheap GPU in PCIe slot and try to enter to BIOS, but in Windows 10 and quick boot option active it's near impossible enter BIOS menu by F2/F10/Del (depends on motherboard brand). In this case clearing BIOS options by jumper will be necessary, after that BIOS will start on first available graphic port. Monitor and signal cable should be connected before powering PC for proper detection video output.
Source of this problem, (assuming cables and monitors are confirmed good) may be:
1. Bad/worn power supply.
2. Overheated and broken GPU. Don't test it in other essential system because of high chance to smoke other motherboard.
3. Dirty/corroded PCIe slot.
BIOS seems good (one beep after power on selftest), same for RAM and CPU - core hardware seems work fine.
Robert Maynard
Volunteer Moderator
I've had to disconnect the power supply and press the PC's power button a few times to drain capacitance in the system before successfully clearing CMOS on one motherboard.
What CPU is this?
As conan02 mentioned, most AM4 processors do not have onboard graphics.