All Discussions > Steam Forums > Hardware and Operating Systems > Topic Details
x 24 Oct @ 1:05pm
MB or CPU dead
Hi,

Just received a used Asus B450M-A II motherboard, a ryzen 5 5500 and some RAM.
RAM was tested and is fine.
Installed CPU, heatsing, installed RAM, installed GPU (that was pulled from the other computer and working), installed m.2 drive.
MB lights up as normal. Turn on power, fans spins and... nothing. No output at all. I'm using the display port with a DP to HDMI cable that is working just fine.
The board has a bios flashback system but the processor doesn't work with the original bios.
Also, can't find any diagnostic LEDs.
So, do I attempt a bios wipe/usb update?
< >
Showing 1-8 of 8 comments
Rumpelcrutchskin 24 Oct @ 2:04pm 
Ryzen 5000 series needs latest BIOS update to work with B450 motherboards, most likely the reason.
#1
_I_ 24 Oct @ 2:28pm 
r5 5500 has no igpu
you need to use the dedicated gpu video ports, not the ones on the mobo
#2
_I_ 24 Oct @ 2:34pm 
do you get any bios beeps?
can you plug a pc speaker into the 4pin header
#3
x 24 Oct @ 2:37pm 
Originally posted by Rumpelcrutchskin:
Ryzen 5000 series needs latest BIOS update to work with B450 motherboards, most likely the reason.

Thanks, but I knew that. Since I bought it as a "combo" I assumed it would be ready to use.
I then updated to the latest bios and nothing.
Went back to some tinkering. Removed the CPU, installed my old 3400G (to test with no GPU) and still nothing. Changed to the older update recomended by PCpartpicker for the 3400G and it worked. Changed the bios again to the one recomended for the 5500, installed the 5500 with my RTX5060 and it booted.
But still... shouldn't the latest bios work for all? Apparantly it updated perfecty (these asus MB are pretty easy to update bios even with no CPU installed).
#4
x 24 Oct @ 2:38pm 
Forgot one of the basics... change the CMOS battery. Will do that just in case.
#5
x 24 Oct @ 2:43pm 
Originally posted by _I_:
r5 5500 has no igpu
you need to use the dedicated gpu video ports, not the ones on the mobo

I didn't do that, but thanks for the reminder. Sometimes it's the stupid little things that get us and we don't even see them. Actually, there's been a lot with this build. The store couldn't find the GPU and it was in a big drawer with a label GPU (the morning team had reorganized the store and the evening team didn't know). Took them half an hour and a few phone calls to find it. Went to pick up one of the orders at the depot and it took the lady 10 minutes and going twice over all the boxes... and it was the one on top all along. And that order was scheduled for one pickup store and was sent to another for no reason...
It's the aliens, has to be.... lol
Hopefully all will be well. Just hope it's not the MB dying or something. At least it updated the bios quite easily.
#6
wing0zero 24 Oct @ 5:00pm 
Originally posted by x:
But still... shouldn't the latest bios work for all?
Only so much space in BIOS, sometimes old CPU's are ditched to make way for new ones, most modern boards have 32MB but looks like the next wave of boards will be 64MB for many.
#7
x 24 Oct @ 5:32pm 
Originally posted by wing0zero:
Originally posted by x:
But still... shouldn't the latest bios work for all?
Only so much space in BIOS, sometimes old CPU's are ditched to make way for new ones, most modern boards have 32MB but looks like the next wave of boards will be 64MB for many.

That might actually be it. All 3 bios files (one for the 3000-G series) from 2020, one from 2021 for the 5000 series and the latest one from 2023 are all exactly 32.772 KB. Could also be that they "fill the file" with straw (as we say over here) to make up for volume in case the board needs it. Kind of also leads me to think of that... being exactly he same size.
#8
< >
Showing 1-8 of 8 comments
Per page: 1530 50

All Discussions > Steam Forums > Hardware and Operating Systems > Topic Details
Date Posted: 24 Oct @ 1:05pm
Posts: 8
Start a New Discussion

Discussions Rules and Guidelines