B450 Pro4 5 beeps no display

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Topic: B450 Pro4 5 beeps no display
Posted: 09 Jul 2025 at 1:43am

So i am having issue with B450 Pro 4.0 R2.0 motherboard
While in configuration R3 2200g Pro, rx 6600 32GB hyperX(2133mhz) PC boots without any issue
But when i bought new R5 3600
PC stopped booting and gives 5 beeps

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Posted: 09 Jul 2025 at 2:00am

Hi Akuseko, welcome to the forums.

5 beeps typically means no display detected. Try connecting your monitor to a
different output on your RX6600. Failing that, try clearing CMOS. If that still
doesn't resolve the issue you can try moving your GPU to the other PCIe slot and
testing with it there. If it works there then you can try switching it back to
it's original slot.

Let me know how it goes.

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Posted: 09 Jul 2025 at 2:22am

Well i don't have any other cables to do this
than hdmi one
which thru rx 6600 works without any issue when paired with r3 2200g

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Posted: 09 Jul 2025 at 2:24am

And this issue looks very similar to other person which had rx 6600 not work at all in PCIE 3.0 16x when run by itself(no other gpu or igpu)

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Posted: 09 Jul 2025 at 2:35am

So you have replaced the 2200g in the system and it works again like that?
Did you try the GPU in the other slot while paired with your R5 3600?
We had another forum user with a similar issue that turned out to be caused by
the card sagging in the slot, it would work with the PC lying flat on it's side
but stopped working when put back upright. The card had been working perfectly until
they upgraded their CPU, they must have put some pressure on the card when swapping
in the upgrade CPU. Probably not the issue for you but worth checking.

Make sure you clear CMOS before powering up with the 3600 installed. AM4 APUs
have a habit of storing problematic/incompatible BIOS settings, likely to support the iGPU.
Given you are having a 5 beep error it would make sense the board is looking for
a different display output other than your RX6600.

When all else fails I have often found this method of clearing CMOS can help get
rid of nasty gremlins:
https://forum.asrock.com/forum_posts.asp?TID=630&title=how-to-clear-cmos-via-battery-removal

Hope this helps.

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Posted: 09 Jul 2025 at 3:17am

Tried several times to clear cmos and it still results in same thing 5 fast beeps
ram switching nothing
unplugging and plugging gpu not working
checked cpu pins all straight...
Bios is newest stable one..
my PC tower is build in way i don't have access to other pcie slot.. without destroying PC..
MB was bought from outlet with dmg to box ...
GPU i bought used from guy and it worked without issue with i5 9400f on gigabyte z370..
so my chances to send gpu/mobo for warranty/repair are non existing...

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Posted: 09 Jul 2025 at 3:22am

and only solution for this issue i see is just getting amd cpu with igpu..

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Posted: 09 Jul 2025 at 3:37am

I feel like we are missing something obvious here. It may be worth picking up a
display port cable before going down the route of switching to another APU. It
can even be a display port to HDMI cable so long as you hook it up to the DP output
from the GPU.
Silly question but I have to be sure, you do have the HDMI cable connected to the
RX6600 not the motherboard yes?

If you like you can also try opening a support ticket with ASRock Tech Support:
https://tw.asrock.com/events/tsd.asp

They may be able to suggest something I haven't thought of, they know their products
better than I do.

Good luck

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Posted: 09 Jul 2025 at 3:39am

it's plugged to GPU didn't go for first on mobo

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