[SOLVED] PC boots but no signal on working GPU

[ragemode_on]

Around 2 months ago on an old dell motherboard my gpu suddenly stopped giving out signal but worked in other systems, after trying lots of things people found helpful i gave up and thought it was the motherboard.
I just got a new Asus board today and basically the same thing is happening, gpu worked normally in another slower system this morning and now i'm getting no signal on it
GPU : R9 270
CPU : i5-2320 (tried using an i3 2120 too)
Power supply : 600W from Corsair around 2 years old (removed label, don't know which exact one, also tried a 500W from Antec)
Motherboard : Asus P8H61-M LE(old one was a Dell MIH61R)

So far i have tried using other working gpus, a different working power supply, a different cpu, reseating ram, new windows 10 installation, different working ram.

 

[Satan-IR]

Welcome to the forums! What is the full system specs? Including make and model of the PSU and how old is the PSU?

 

[ragemode_on]

Welcome to the forums! What is the full system specs? Including make and model of the PSU and how old is the PSU?

I just found an option to select primary graphics in bios, when i set it to pcie and save&reboot it sets it back to auto and i still only get signal on the igpu

 

[Satan-IR]

I just found an option to select primary graphics in bios, when i set it to pcie and save&reboot it sets it back to auto and i still only get signal on the igpu

That's odd, not sure but maybe BIOS changes that because you not getting anything from the GPU and the display/monitor is plugged in the motherboard graphics port?

You said the graphics card worked in another system? Even changing motherboard and GPU not working with the new one would somehow point to a faulty GPU. Are the auxiliary 6+2 PCIE power connectors firmyl seated in the GPU? How many 6+2 does the card need? You didn't specify make and model of the GPU. We don't know the RAM either.

Well you not knowin the exact output from the PSU (label removed) is not helping. Are you sure the PSU is actually a good 600W unit? Although you tried with another PSU and that one not working either is odd.

I'd suggest bread-boarding the system outside the case on a nonconductive surface. Just PUS+MOBO+CPU+RAM (one stick if you have more) to see if you get it to POST.

 

[ragemode_on]

That's odd, not sure but maybe BIOS changes that because you not getting anything from the GPU and the display/monitor is plugged in the motherboard graphics port?

You said the graphics card worked in another system? Even changing motherboard and GPU not working with the new one would somehow point to a faulty GPU. Are the auxiliary 6+2 PCIE power connectors firmyl seated in the GPU? How many 6+2 does the card need? You didn't specify make and model of the GPU. We don't know the RAM either.

Well you not knowin the exact output from the PSU (label removed) is not helping. Are you sure the PSU is actually a good 600W unit? Although you tried with another PSU and that one not working either is odd.

I'd suggest bread-boarding the system outside the case on a nonconductive surface. Just PUS+MOBO+CPU+RAM (one stick if you have more) to see if you get it to POST.

I tried plugging the monitor into the gpu right before i pressed enter but didn't save it that time either.
GPU is a XFX R9 270 and it has a 6pin connector and its firmly seated in.
For the ram, im currently using a single stick of viper patriot ddr3 ram though i tried with other sticks that work in my other system.
The PSU is VS600 from Corsair and its around 2 years old, it was bought new.

I will try breadboarding the system and see if i get anything to happen.

 

[Unolocogringo]

Some bios are weird.
Had this problem once with an oem system.Finally I made the changes in bios . save and exit.
As soon as the monitor goes blank(turns off) flip the switch on the power supply.
Do not let it reboot.
Move monitor cable to video card and boot.
Do not have a second monitor attached to the motherboard ports.
Bios will try onboard ports for display first as default. if it finds it it will automatically boot to it. If no display it will then try other devices in boot cycle.
If you have 2 monitors connected the monitor connected to the video card will not receive signal until windows is booted.
Both monitors will not show bios. Only the first initiated display.

 

[Satan-IR]

Yeah I guessed as much have seen a weird BIOS like this once. User reset and changed CMOS battery but wouldn't save/hold changes. A while after that there was a BIOS update by the manufarcuter that fixed it.

Good point about the posible second monitor I didn't ask as OP did't mention one.

@ragemode_on try what Unolocogringo said first.

 

[ragemode_on]

Yeah I guessed as much have seen a weird BIOS like this once. User reset and changed CMOS battery but wouldn't save/hold changes. A while after that there was a BIOS update by the manufarcuter that fixed it.

Good point about the posible second monitor I didn't ask as OP did't mention one.

@ragemode_on try what Unolocogringo said first.

I tried but nothing happened, i have noticed it saves other options normally, the only option that sets back to auto is the primary graphics option.
When i set it to iGPU, it does not reset back to auto, it just boots normally to windows

 

[Unolocogringo]

Asus P8H61-M-VG3
Is that the correct board ID?

 

[Unolocogringo]

My next thought would be a full bios reset.
Remove power.
push power (Start) button.
Take out bios battery.
Short CMOS jumper pins for 30 seconds.
replace battery .
Install video card.
Connect monitor to video card.
Connect power and boot.
Enter bios and set date time etc......
Some older boards stored boot sequence. DMI I think it was called.
You had to reset this to reset bios boot sequence.

 

[ragemode_on]

My next thought would be a full bios reset.
Remove power.
push power (Start) button.
Take out bios battery.
Short CMOS jumper pins for 30 seconds.
replace battery .
Install video card.
Connect monitor to video card.
Connect power and boot.
Enter bios and set date time etc......
Some older boards stored boot sequence. DMI I think it was called.
You had to reset this to reset bios boot sequence.

Have done that a few times already, just put in an older gt 730 i had laying around and it worked, i could set the primary graphics setting to PCIE without it reseting and it booted to windows normally, after that i tried my r9 270 but got no signal again and the bios setting has been reset again.

Edit : Not sure why this is happening but i see that the gpu bios on my r9 270 does not support uefi (source https://www.techpowerup.com/vgabios/153940/xfx-r9270-2048-131119-1 ) and the gt 730 does ( source https://www.techpowerup.com/vgabios/166858/asus-gt730-2048-140519 )

I have tried flashing the R9 270 bios with a newer version that supports uefi but got nothing to happen, had to flash on my older system aswell because the graphics card was and still isnt being detected by windows.

 

[ragemode_on]

Asus P8H61-M-VG3
Is that the correct board ID?

just saw this sorry, and no it's asus p8h61-m le, my bad

 

[Unolocogringo]

Tried to look up your board. could not find exact model number to check bios.
In boot section of bios check for CSM or legacy support.

 

[ragemode_on]

Tried to look up your board. could not find exact model number to check bios.
In boot section of bios check for CSM or legacy support.

checked and unfortunately found nothing

 

[ragemode_on]

the only way i get this motherboard to work with a graphics card is to use my old asus gt730, could it be an issue with my pcie slot and am i able to test it since the gt730 is an 8x card

 

[Unolocogringo]

A possibility.
Can you check the card in another computer and verify the bios update was successful?
Does the card have a dual bios?
You flashed one chip but still booting from the non EUFI bios?

 

[ragemode_on]

A possibility.
Can you check the card in another computer and verify the bios update was successful?
Does the card have a dual bios?
You flashed one chip but still booting from the non EUFI bios?

yes, the bios update was successful, currently using it without problems on another system but i couldn't find anything on a dual bios on my model so far