3080 arrived yesterday, swapping it out for a 1070 which I sold last month. The system boots perfectly without the GPU installed, it also boots if the 3080 is installed but I change video output to the onboard CPU graphics - but then 3080 does not show in task manager or device manager. My brother has an identical 3080 and when I plug it in the exact same thing happens.
Both 8 pins are connected, its seated properly, tried display port and HDMI on the GPU. Tried without storage installed, rebuilt the system 20 odd times, new PSU is 850w. It was assembled in the case, but is now spread across the arm of a sofa - and I can still boot without GPU installed. I thought the pcie slot was broken, but if I set video output to auto and plug the display port into the motherboard it beeps at me to say graphics card error, whereas when I plug the display port into the graphics card the machine begins to boot, sends the successful boot beep code, then about 20s later sends out the failed to boot beeps - nothing is ever shown on the screen. So I'm guessing the motherboard can see it in the slot but is refusing to play ball.
My motherboard is an old lenovo from a thinkcentre but is x16 slot so I don't think it matters, I'm running an old intel 4th gen or something but I never had problems with my 1070. I've updated bios, tried using ddu, tried throwing it at a wall and tried throwing myself at a wall. Still didnt work.
Any ideas?
I have a new motherboard, cpu and ram coming as I upgraded the whole PC, but they don't come until tomorrow and I'm impatient... thankkss
Pics: gpu pcb is almost as big as mobo
https://ibb.co/BC8f7Mz - top half mobo
https://ibb.co/NypCXxv - underside - ik the slots that can be seen are pci, but the GPU is plugged into a 16x pcie.
Both 8 pins are connected, its seated properly, tried display port and HDMI on the GPU. Tried without storage installed, rebuilt the system 20 odd times, new PSU is 850w. It was assembled in the case, but is now spread across the arm of a sofa - and I can still boot without GPU installed. I thought the pcie slot was broken, but if I set video output to auto and plug the display port into the motherboard it beeps at me to say graphics card error, whereas when I plug the display port into the graphics card the machine begins to boot, sends the successful boot beep code, then about 20s later sends out the failed to boot beeps - nothing is ever shown on the screen. So I'm guessing the motherboard can see it in the slot but is refusing to play ball.
My motherboard is an old lenovo from a thinkcentre but is x16 slot so I don't think it matters, I'm running an old intel 4th gen or something but I never had problems with my 1070. I've updated bios, tried using ddu, tried throwing it at a wall and tried throwing myself at a wall. Still didnt work.
Any ideas?
I have a new motherboard, cpu and ram coming as I upgraded the whole PC, but they don't come until tomorrow and I'm impatient... thankkss
Pics: gpu pcb is almost as big as mobo
https://ibb.co/BC8f7Mz - top half mobo
https://ibb.co/NypCXxv - underside - ik the slots that can be seen are pci, but the GPU is plugged into a 16x pcie.
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