Hi guys i have really strange problem which i am trying to fix for week now.
I cant boot PC unless it has plugged in HDMI screen into Main AMD GPU.
I tried like 50 times now and can say that when i have plugged in screen the PC boots with no problem at all.
But hwne i try to boot the same PC with disconnected screen the PC wont boot.
I am booting from SSD and from USB drive. Both windows, and linux. And both has the same problem, its not OS related !.
As i see this:
when screen is disconnected i dont see usb drive flashing - so it even doesnt start booting.
And when its plugged in to hdmi i see ofcourse flashing ooon usb drive and normally it boots.
So anybody know what is the problem ?
I have the same setups with R9 380 gpus and i dont have this problem.
But now i builded RX480 PC which have the same problem (three of them !)
Also tried to flash different bios to motherboard. Still it isnt helping.
Any idea ?
This sets works fine:
Motherboard: H81 Pro BTC
GPUs: 6x R9 380
PSU: Corsair 1000w
Those sets have problem:
Motherboard: H81 Pro BTC
GPUs: 3x RX480
PSU: 850w Bequiet
And i repead, it boots 100% when i have connected screen.
After it boots, i disconnect hdmi and its working , only booting is problem.
I cant boot PC unless it has plugged in HDMI screen into Main AMD GPU.
I tried like 50 times now and can say that when i have plugged in screen the PC boots with no problem at all.
But hwne i try to boot the same PC with disconnected screen the PC wont boot.
I am booting from SSD and from USB drive. Both windows, and linux. And both has the same problem, its not OS related !.
As i see this:
when screen is disconnected i dont see usb drive flashing - so it even doesnt start booting.
And when its plugged in to hdmi i see ofcourse flashing ooon usb drive and normally it boots.
So anybody know what is the problem ?
I have the same setups with R9 380 gpus and i dont have this problem.
But now i builded RX480 PC which have the same problem (three of them !)
Also tried to flash different bios to motherboard. Still it isnt helping.
Any idea ?
This sets works fine:
Motherboard: H81 Pro BTC
GPUs: 6x R9 380
PSU: Corsair 1000w
Those sets have problem:
Motherboard: H81 Pro BTC
GPUs: 3x RX480
PSU: 850w Bequiet
And i repead, it boots 100% when i have connected screen.
After it boots, i disconnect hdmi and its working , only booting is problem.