BIOS not detecting GPU

[Coconut Juice]

Hello!
I am having troubles with my GPU not displaying during the POST and during windows.

My Radeon HD 4850 was working just fine until I tooked it out and plugged in a Radeon HD 4670 to test it out for one of my friend. I was reusing the same driver for my HD 4850 and it worked well.
Booted up my PC this morning and i now have a blank screen. My PC was still using the HD 4670.

The onboard GPU works but not the HD 4670 or the HD 4850.

Here are my PC spec:
Motherboard - Asrock N68 VS3 UCC
CPU - AMD Athlon II x2 250
GPU - AMD Radeon HD 4850 (ASUS version)
Memory - Kingston HyperX DDR3 1600Mhz 2x2GB (the actual speed that I use is 1333mhz)
HDD - Seagate 500GB Barracuda 7200RPM
PSU - Rosewill RD400 2DB
Monitor - Samsung 1440x900 using a VGA connector
OS - Windows 7 64 bit

Having listed my PC spec I will now type out what i have done so far.

-Cleared the CMOS.

-Tested the ATI Radeon HD 4850 and the HD 4670 on another one of my friend's PC and both displays the POST screen.

-Tested an old Radeon x300 on my motherboard and it, to my amazement, displays the POST screen!

-PCIE is the primary graphics in the BIOS.

-I have uninstalled the onboard gpu driver to no avail.

-Checked to see that I have the latest BIOS which I do.


That is pretty much it. I don't think that my Motherboard is faulty nor my HD 4850 as well. Could it be the AMD Driver which I already uninstalled.

Any help would be greatly appreciated.

Thanks.

Also I gave the Radeon HD 4670 back to my friend.

 

[Coconut Juice]

Ok i looked into the device manager there is no "display device" but under "Other devices" the X300 is listed as Video Controller.

Now for the HD 4850.
When I was using the onboard GPU while the HD 4850 is still plugged in on my motherboard with it's fan running.
I did check the Device manager and only the onboard GPU is listed under the Display.

I could try again.

 

[bgunner]

When you try it again, If the HD 4850 does not show up or a yellow triangle with an exclamation point in it in other devices this says teh card is not being detected by the PCI-e slot. This would be where the issue lays.

 

[Coconut Juice]

When you try it again, If the HD 4850 does not show up or a yellow triangle with an exclamation point in it in other devices this says teh card is not being detected by the PCI-e slot. This would be where the issue lays.

Under the Display Adapter:
NVIDIA Geforce 7025 / NVIDA nForce 630a (Microsoft Corporation - WDDM)


No signs of the Radeon HD 4850 anywhere on Device Manager.
Radeon HD 4850 is plugged in and fan is spinning.

 

[bgunner]

When you try it again, If the HD 4850 does not show up or a yellow triangle with an exclamation point in it in other devices this says teh card is not being detected by the PCI-e slot. This would be where the issue lays.

Under the Display Adapter:
NVIDIA Geforce 7025 / NVIDA nForce 630a (Microsoft Corporation - WDDM)


No signs of the Radeon HD 4850 anywhere on Device Manager.
Radeon HD 4850 is plugged in and fan is spinning.

Then the card is not getting a good connection in the pci slot.

 

[Coconut Juice]

When you try it again, If the HD 4850 does not show up or a yellow triangle with an exclamation point in it in other devices this says teh card is not being detected by the PCI-e slot. This would be where the issue lays.

Under the Display Adapter:
NVIDIA Geforce 7025 / NVIDA nForce 630a (Microsoft Corporation - WDDM)


No signs of the Radeon HD 4850 anywhere on Device Manager.
Radeon HD 4850 is plugged in and fan is spinning.

Then the card is not getting a good connection in the pci slot.

I am totally confused here.
How come the ATI x300 works but not the HD 4850, I mean they are both using the same slot.

Well do you have any other options that i should try?
I am thinking about doing a reinstall of windows or buy another Motherboard....

 

[bgunner]

When you try it again, If the HD 4850 does not show up or a yellow triangle with an exclamation point in it in other devices this says teh card is not being detected by the PCI-e slot. This would be where the issue lays.

Under the Display Adapter:
NVIDIA Geforce 7025 / NVIDA nForce 630a (Microsoft Corporation - WDDM)


No signs of the Radeon HD 4850 anywhere on Device Manager.
Radeon HD 4850 is plugged in and fan is spinning.

Then the card is not getting a good connection in the pci slot.

I am totally confused here.
How come the ATI x300 works but not the HD 4850, I mean they are both using the same slot.

Well do you have any other options that i should try?
I am thinking about doing a reinstall of windows or buy another Motherboard....

I already mentioned what to try. Lift the card and start tje machine. Next try to let it hang and start it. This will put pressure on the coonection in a different way to try to make it connect.

Reimstalling windows will not help because it is a physical hardware issue. Replacing the motherboard will because it will change the pci slot. Try my suggestion first.

The reason one will connect pdroperly and the other wont could be a few things. Dirty connections, broken tab on he card, slightly different thickness of the pcb board.

 

[Coconut Juice]

When you try it again, If the HD 4850 does not show up or a yellow triangle with an exclamation point in it in other devices this says teh card is not being detected by the PCI-e slot. This would be where the issue lays.

Under the Display Adapter:
NVIDIA Geforce 7025 / NVIDA nForce 630a (Microsoft Corporation - WDDM)


No signs of the Radeon HD 4850 anywhere on Device Manager.
Radeon HD 4850 is plugged in and fan is spinning.

Then the card is not getting a good connection in the pci slot.

I am totally confused here.
How come the ATI x300 works but not the HD 4850, I mean they are both using the same slot.

Well do you have any other options that i should try?
I am thinking about doing a reinstall of windows or buy another Motherboard....

I already mentioned what to try. Lift the card and start tje machine. Next try to let it hang and start it. This will put pressure on the coonection in a different way to try to make it connect.

Reimstalling windows will not help because it is a physical hardware issue. Replacing the motherboard will because it will change the pci slot. Try my suggestion first.

The reason one will connect pdroperly and the other wont could be a few things. Dirty connections, broken tab on he card, slightly different thickness of the pcb board.

Ok I guess it is time to close the thread.
I will try your suggestion tomorrow.

Thank you for replying and good night.

 

[jonvinnes]

When you try it again, If the HD 4850 does not show up or a yellow triangle with an exclamation point in it in other devices this says teh card is not being detected by the PCI-e slot. This would be where the issue lays.

Under the Display Adapter:
NVIDIA Geforce 7025 / NVIDA nForce 630a (Microsoft Corporation - WDDM)


No signs of the Radeon HD 4850 anywhere on Device Manager.
Radeon HD 4850 is plugged in and fan is spinning.

Then the card is not getting a good connection in the pci slot.

I am totally confused here.
How come the ATI x300 works but not the HD 4850, I mean they are both using the same slot.

Well do you have any other options that i should try?
I am thinking about doing a reinstall of windows or buy another Motherboard....

I already mentioned what to try. Lift the card and start tje machine. Next try to let it hang and start it. This will put pressure on the coonection in a different way to try to make it connect.

Reimstalling windows will not help because it is a physical hardware issue. Replacing the motherboard will because it will change the pci slot. Try my suggestion first.

The reason one will connect pdroperly and the other wont could be a few things. Dirty connections, broken tab on he card, slightly different thickness of the pcb board.

Ok I guess it is time to close the thread.
I will try your suggestion tomorrow.

Thank you for replying and good night.

hi! so what happened now to your issue? is ok now?

 

[Salamiman1]

Hi all,
I had this very problem & tried every trick in the book, googled the absolute shit out of it & wasted hours looking for what i thought was a software issue.
Fan was on yet had a black screen, no cursor, nothing.
Begunner in my case was totally correct.
I measured with a verier the distance between the front mounting plate & start of the connectors & there was approx .5mm of difference between a non working & working card, so i carefully bent the mounting bracket to adjust it to match the working card.
The other thing B4 replacing the card, I rubbed the connectors on the card with a synthetic scouring pad, & had already cleaned the PCI slot previously.
To my surprise the card worked no issues at all, just set it up as a std GPU install
So in conclusion I'm not 100% sure which of the 2 remidies worked, but it was definitively a connection/alignment issue as stated by bgunner, not a software/BIOS one.
Hope this helps someone else!
Thanks for your help, most appreciated!