PC Won't Boot with New GPU

[meWASHER]

I'm attempting to upgrade my son's GPU, we're going from an RX 570 to an RX 6650 XT. After running DDU and shutting down the PC, unplugging everything, and installing the new card the PC will not boot. The POST lights get stuck on VGA every time. If I reinstall his old card the PC boots up just fine, and the new card works without issues in my PC.

I have tried reseating the card multiple times, resetting CMOS (I've jumped the pins and removed the battery and drained any power left in the system by repeatedly pressing the power button while unplugged), tried a different PSU power cable (both ends on both cables), switched from CSM to UEFI, enabled Above 4G decoding, tried running a single stick of RAM (with two separate kits).

 

I've spent my entire evening trying to sort this out, so any suggestions would be greatly appreciated!

 

His setup is:

MSI B450 Pro-M2 Max

Ryzen 5 1500X

16 GB DDR4 3200MHz

650W Corsair CX650M

[OhYou_]

are you using an 8 pin power cable with the new one? I only ask because the 570s were 6 pin and you would have had to go to an 8 pin cable for the 6650
Maybe update the bios and see if it works then, its not normal for a gpu to need a bios update but thats also a really old board so idk.

do you have any other pc to test the card in

[SpookyCitrus]

A bios update if not done already may fix support for the newer card and that older board, also, by trying different power cables what do you mean? Like desktop power cable to the wall or you switched out a modular PCIE cable on the power supply to run to the graphics card? If you aren't using the PCIE cable that came with the power supply originally it may be an incompatible cable, modular power supply cables are not universal, they are model/series specific.

[meWASHER]

18 minutes ago, OhYou_ said:

are you using an 8 pin power cable with the new one? I only ask because the 570s were 6 pin and you would have had to go to an 8 pin cable for the 6650
Maybe update the bios and see if it works then, its not normal for a gpu to need a bios update but thats also a really old board so idk.

do you have any other pc to test the card in

I've updated the BIOS to the most current version and it did not solve the problem. 

 

I've put the card in another system (B450 Tomahawk MAX II, Ryzen 3600, 16 GB DDR4 3600MHz, 750W Corsair CX750M) and the systems booted with no issues. I installed drivers and ran a few games as a sanity check to make sure the card was in fact working. Everything was fine. As soon as I reinstalled in my son's PC the system hangs on the VGA POST light.

9 minutes ago, SpookyCitrus said:

A bios update if not done already may fix support for the newer card and that older board, also, by trying different power cables what do you mean? Like desktop power cable to the wall or you switched out a modular PCIE cable on the power supply to run to the graphics card? If you aren't using the PCIE cable that came with the power supply originally it may be an incompatible cable, modular power supply cables are not universal, they are model/series specific.

I switched out a modular PCI-E cable on the power supply, sorry for the confusion. The second cable was included with the PSU. 

 

Thank you both for your answers!

[SpookyCitrus]

7 minutes ago, meWASHER said:

I've updated the BIOS to the most current version and it did not solve the problem. 

 

I've put the card in another system (B450 Tomahawk MAX II, Ryzen 3600, 16 GB DDR4 3600MHz, 750W Corsair CX750M) and the systems booted with no issues. I installed drivers and ran a few games as a sanity check to make sure the card was in fact working. Everything was fine. As soon as I reinstalled in my son's PC the system hangs on the VGA POST light.

I switched out a modular PCI-E cable on the power supply, sorry for the confusion. The second cable was included with the PSU. 

 

Thank you both for your answers!

Only thing I can think of is if it's an older C650M it could have an issue powering the card. If possible I'd try it in his system with a different power supply. 

[meWASHER]

2 hours ago, SpookyCitrus said:

Only thing I can think of is if it's an older C650M it could have an issue powering the card. If possible I'd try it in his system with a different power supply. 

I was worried that might be the case, even though that PSU has powered a Vega 56 and an RX 6700 XT without issues in the past. 

 

I finally solved the issue. After updating the BIOS to the most current version there was an option under PCI-E settings called "PCI_E2 Lanes Configuration" which allowed me to run the x16 slot at x8, which is all that the GPU uses. 

 

Thanks again for the help, this one had me stumped.

[OhYou_]

1 hour ago, meWASHER said:

"PCI_E2 Lanes Configuration" which allowed me to run the x16 slot at x8,

thats insane, I'm not sure how that even happens, you absolutely shouldnt have to do that in most cases. it's gotta be something really stupid going on over at MSI bios development office

[meWASHER]

16 hours ago, OhYou_ said:

thats insane, I'm not sure how that even happens, you absolutely shouldnt have to do that in most cases. it's gotta be something really stupid going on over at MSI bios development office

The weirdest part is I tested the card in another MSI B450 board, and it worked with zero issues. I've not had any serious problems with my MSI motherboards, but the descriptions of some of their settings in the BIOS could definitely use some improvement. It wasn't I actually selected the "PCI_E2 Lane Configuration" that I was able to tell it would switch the slot to x8, the description just says something about using an MSI M.2 Xpander. 

 

Nothing can ever be that simple when it comes to PC hardware, I guess.

6 hours ago, anyabaker said:

Please check the pcle compatibility-

While both the RX 570 and RX 6650 XT use the PCIe interface, their specific PCIe versions differ. The RX 570 uses PCIe 3.0, while the RX 6650 XT uses PCIe 4.0. Double-check your motherboard's specifications to ensure its PCIe slots support PCIe 4.0. If not, the RX 6650 XT might not function properly.

The board only supports PCI-E 3.0, but I was aware of this when purchasing the card. Fortunately, this doesn't seem to be an issue. I'm keeping my fingers crossed though.