upgrading a computer from on-board video to video board, but no video from the new board :(

Brunofl

Commendable
Dec 10, 2016
3
0
1,510
Hi,
I have a computer with Gigabyte GA-Z77M-D3H motherboard, it has an on-board video that I have been using for almost 4 years.
This week I decided to buy a Radeon RX470 Nitro oc 8GB, I thought it would be simply plug and play but after plugged on the PCI-express 3 slot (tried both the slots) no video appeared anymore. When I try to turn on the computer with the energy cable disconnected from the video board the on-board video works, but I was not able to make the video work on any of the video board plugs hdmi or dvi. Any ideas on what the issue can be? when the power plug is connected neither keyboard or mouse work when the computer is turned on.

I am using Windows 10 64bits pro
 
Solution
I would leave the BIOS in AUTO, not try to force it to PCI. Why: If the video card is defective you would need to move a jumper to clear cmos to get video working again with the integrated gphics (IGFX). Unless the MB is bad it will prefer the PCI card over built in graphics in AUTO.

Can you test the RX470 card on a different pc? Or is there another PCIe card you can test in your current PC ? If not, I'd contact whoever sold you the card for an even exchange RMA. They may ask you to try some other tests, but you've already done everything I can think of. Maybe someone else has another suggestion. There is also a good "no boot, no video" sticky in this thread you can examine.

re keyboard and mouse not working: NICE. I like...
1. Make sure you moved the Monitor VIDEO cable from the MB connector to the video connector on the card.
2. Make sure your MB BIOS is set to AUTO to switch from onboard graphics to PCI based graphics. Check this using the working on-board video.
3. Make sure you plugged in the 6 pin power connector the RX470 needs.
4. See your MB manual for troubleshooting. If it detects bad video it should give you a beep code or other diagnostic. If the card is bad the MB usually will catch that.

GL

"...when the power plug is connected neither keyboard or mouse work when the computer is turned on..." How do you know this if video is not working ?
 
Thanks for the reponse,

The BIOS was already set to auto in the following options:
Init Display First
Internal Graphics

As the slot is PCI express which "init diplay first" option would be more adequate (IGFX, PEG or PCI) to force the system to use the video card? PCI?

"...when the power plug is connected neither keyboard or mouse work when the computer is turned on..." How do you know this if video is not working ?

The keyboard NumLock light does not turn on and off when I press the numlock button and the Mouse laser light does not turn on.
 
I would leave the BIOS in AUTO, not try to force it to PCI. Why: If the video card is defective you would need to move a jumper to clear cmos to get video working again with the integrated gphics (IGFX). Unless the MB is bad it will prefer the PCI card over built in graphics in AUTO.

Can you test the RX470 card on a different pc? Or is there another PCIe card you can test in your current PC ? If not, I'd contact whoever sold you the card for an even exchange RMA. They may ask you to try some other tests, but you've already done everything I can think of. Maybe someone else has another suggestion. There is also a good "no boot, no video" sticky in this thread you can examine.

re keyboard and mouse not working: NICE. I like your reasoning a lot.

If the video card is bad it can keep your system from POSTING correctly, which would explain why you see "keyboard NumLock light does not turn on and off when I press the numlock button and the Mouse laser light does not turn on."

update: one last thing to try. With integrated video, Get into BIOS, reset to defaults, SAVE. now switch back to the card and see if it works.
 
Solution
Thanks fa lot for the help ,
I found a thread on gigabyte motherboards issues with these RX470 and RX480 cards, and a guy redhen256 suggested updating the BIOS. <https://community.amd.com/thread/202647> I did update it to F13, and when I connected the power cable it magically worked after booting. 😀 Wow feeeels good
Thank you for the patience and nice support tsnor!
 


You found the solution, you posted the answer so others following the thread would know what to do, and then you were nice enough to say thanks for the help (which didn't help). You are a good person. Glad everything is working.