Help! - New Radeon RX 6600 XT problem (PC not booting, freeze before bios)

[WidjacK]

Hi,

I just got this brand new GPU and when i plug it in my motherboard, plug a monitor in and start my PC, the monitor shows the first ASUS screen, with the "press F2 or Delete to enter bios" message. But the screen stays there, frozen. There is no way to enter the bios, nothing is happening at all. The fans on the GPU seem to run just fine.

GPU : XFX Speedster SWFT210 Radeon RX 6600 XT

When i unplug the new AMD GPU and use my old GTX-970 (or none at all and just use the integrated graphics of my motherboard), everything runs fine. The first ASUS screen goes away very fast and there is actually a second, different screen with a different prompt (F1) to enter the bios and this one works just fine.

I tried uninstalling all graphics drivers prior to plugging the new card in, i tried the second PCIE slot of my motherboard, i tried with both GPU plugged in at the same time, but i get the same problem everytime. My PSU is 750W and the card require 500W.

Do you guys think i just got unlucky and got a defect GPU ?
Is there something else i could try before asking for a replacement ?
Should i try updating my BIOS / UEFI... Is it relevant ? I didn't do it because i'm no expert and I'm not 100% confident I won't break something...
Is the card not compatible with my rig at all ??

Motherboard : Asus Prime Z370-P
PSU : Corsair CS Series 750W Modular Power Supply

Thank you very much to anyone who could provide help / advice !

 

[GerKNG]

you could reset your CMOS first.
Shut down your PC, turn it off on the Powersupply, hold the powerbutton for a few seconds to drain any leftover power.

take a screwdriver and short these two pins for around 30 seconds on your motherboard.
After that restart your PC. (Your Bios will be set to default and all settings are deleted/reset)

 

[WidjacK]

It worked like a charm!!

I would love to understand why, but the most important part is that it did!

Thank you so much sir!
Have a great day!

 

[GerKNG]

It worked like a charm!!

I would love to understand why, but the most important part is that it did!

Thank you so much sir!
Have a great day!

great that i could help you
have fun with your new 6600XT!

 

[dirtyferret]

you could reset your CMOS first.
Shut down your PC, turn it off on the Powersupply, hold the powerbutton for a few seconds to drain any leftover power.

take a screwdriver and short these two pins for around 30 seconds on your motherboard.
After that restart your PC. (Your Bios will be set to default and all settings are deleted/reset)

Out of curiosity, why the "paper clip" method as opposed to removing the batter for a few seconds?

 

[GerKNG]

Out of curiosity, why the "paper clip" method as opposed to removing the batter for a few seconds?

you could remove the battery as well but before you may have to remove a GPU to be able to reach it.
Shorting the Clear RTC pins just disconnects the battery and is probably easier and/or faster.

 

[skizzo]

It worked like a charm!!

I would love to understand why, but the most important part is that it did!

Thank you so much sir!
Have a great day!

if resetting the UEFI to "optimized defaults" aka, what it shipped with from the factory, through clearing the CMOS solved your problem then it suggests you had some unfavorable setting selected in the UEFI resulting in your frozen screen

people have similar issues because of using a combo between legacy systems and UEFI for their choice of motherboard and GPU. however, I'm as curious as you are since a Z370 system and RX 6600 XT GPU are not that far apart to think the same happened here. if you were playing around with settings in the UEFI, well....now you know it was pilot error and you selected something weird. if you weren't changing any settings, now we're back to scratching our heads lol

 

[eidairaman1]

It worked like a charm!!

I would love to understand why, but the most important part is that it did!

Thank you so much sir!
Have a great day!

You had a bad setting enabled

 

[WidjacK]

if resetting the UEFI to "optimized defaults" aka, what it shipped with from the factory, through clearing the CMOS solved your problem then it suggests you had some unfavorable setting selected in the UEFI resulting in your frozen screen

people have similar issues because of using a combo between legacy systems and UEFI for their choice of motherboard and GPU. however, I'm as curious as you are since a Z370 system and RX 6600 XT GPU are not that far apart to think the same happened here. if you were playing around with settings in the UEFI, well....now you know it was pilot error and you selected something weird. if you weren't changing any settings, now we're back to scratching our heads lol

I never fiddled around the settings in the UEFI at all. But i did not build my PC from scratch myself. I ordered the components on MemoryExpress and had them assemble it and install windows, drivers, etc.
It's possible the person who originally installed the drivers, etc changed some settings...

Otherwise i have no idea what happened

 

[eidairaman1]

I never fiddled around the settings in the UEFI at all. But i did not build my PC from scratch myself. I ordered the components on MemoryExpress and had them assemble it and install windows, drivers, etc.
It's possible the person who originally installed the drivers, etc changed some settings...

Otherwise i have no idea what happened

Bad setting as i said before

 

[skizzo]

for what it is worth, I just put in a new GPU in my system last night and I got a little concerned for about 1 min. Booted to a black screen with just a underscore line, almost like it was a terminal/command line window. tried twice, couldn't even get to UEFI. no idea how changing a GPU did this, but the UEFI failed to boot. so removed the GPU, and connected only the onboard iGPU so I could reset to optimized defaults, and then load my saved settings, after that I was back to normal after reinstalling the new GPU. So just saying......weird shit happens. something obviously got changed in UEFI settings or wasn't detected properly during POST on that particular boot, either would be by no fault of my own. that's why smart people come up with ideas like being able to save UEFI profiles, having "dual BIOS" on boards, and being able to reset to default settings with a press of a button. shit happens, you just gotta know how to trouble shoot through it

 

[dirtyferret]

for what it is worth, I just put in a new GPU in my system last night and I got a little concerned for about 1 min. Booted to a black screen with just a underscore line, almost like it was a terminal/command line window. tried twice, couldn't even get to UEFI. no idea how changing a GPU did this, but the UEFI failed to boot. so removed the GPU, and connected only the onboard iGPU so I could reset to optimized defaults, and then load my saved settings, after that I was back to normal after reinstalling the new GPU. So just saying......weird shit happens. something obviously got changed in UEFI settings or wasn't detected properly during POST on that particular boot, either would be by no fault of my own. that's why smart people come up with ideas like being able to save UEFI profiles, having "dual BIOS" on boards, and being able to reset to default settings with a press of a button. shit happens, you just gotta know how to trouble shoot through it

I recall someone else posting a similar type issue on another forum with a RX 6600XT (I want say a red devil unit). I forget if they had a Z270, Z370 or Z390 mobo. They correctly deleted old drivers, power was going to the unit (lights on, fans spin) but no signal was going to the monitor while iGPU worked fine.

 

[NZRichard]

Similar problem here to post #1 by WidjacK - new Gigabyte RX 6600 XT installed on ASUS Z370-A board with custom UEFI settings for macOS - "froze" at monitor splash screen *

Solved by CMOS reset as mentioned by GerKNG - default settings allow decent RX 6600 XT performance with macOS 12.6 (Geekbench 5 Compute ~ 63000)

Edit/Update:
* - system ran fine with custom UEFI settings + Sapphire RX 580 Pulse 8GB prior to installing RX 6600 XT.