how do i flash a MB Bios if i cant get to post scren and have no signal please?

truewraith · 8 Oct 2021 at 20:42

i appreciate any help on this and also can someone let me know please how i can flash this latest board without any post or screen to see where im going?

VersionMonkey · 8 Oct 2021 at 20:59

truewraith said:
i managed to get hold another MB and WOW i have same issue this time there is a bright red light showing on the board

Looking at the manual for that board, there should be a column of 4 lights towards the top right of the board that illuminate in sequence top to bottom - which ones light up?

truewraith · 8 Oct 2021 at 23:13

2nd red light from the bottom of the 4 lights

VersionMonkey · 9 Oct 2021 at 17:41

truewraith said:
2nd red light from the bottom of the 4 lights

The manual suggests that's a problem with the GPU. The order it gives top to bottom is:

CPU - indicates CPU is not detected or fail.
DRAM - indicates DRAM is not detected or fail.
VGA - indicates GPU is not detected or fail.
BOOT - indicates the booting device is not detected or fail

What GPU is it - I see you mentioned Sapphire, but didn't spot a model?

truewraith · 10 Oct 2021 at 02:00

Sapphire Rx480 4gb, tbh i thought it was a 580 that i had spare but after closer look on the card its 480

SilverTongue · 10 Oct 2021 at 08:45

How many power plugs does the GPU take and if it's 2 are they from 2 separate cables from the PSU or have you used a splitter?

freddie64 · 10 Oct 2021 at 09:12

Make sure the PCI-E cable is plugged into the GPU and the PSU (made this mistake myself before).

Think your GPU has a bios switch, try it in alternate position.

VaderDSL · 10 Oct 2021 at 09:58

Also sometimes the gpu may seem seated but might not be fully in, be worth just making sure the clip at the back of the pcie slot is securing the tab on the gpu and checking it all looks seated ok.

truewraith · 11 Oct 2021 at 01:05

huge thanks everyone for things to try, but i have had no luck and despite the LED lights lighting up all the time on the GPU that say Sapphire it still cant get post screen or anything past No signal and i took a gamble on another MB because theres no way i will be able to afford a New GPU even if i can find one with the way prices are. even a 580 / 570 would be amazing if i could find

truewraith · 11 Oct 2021 at 16:31

tried the bios switch on the gpu, but nothing

ANDARIAL · 11 Oct 2021 at 17:17

Have you plugged in the 4/8 pin to the Mobo?I can't see it in your pics myself

freddie64 · 11 Oct 2021 at 22:04

truewraith said:
i have had no luck and despite the LED lights lighting up all the time on the GPU that say Sapphire it still cant get post screen or anything past No signal

Maybe the LED is getting power through the motherboard slot.

Check both ends of the GPU power cable to make sure it is fully connected, also check for any damaged/misaligned pins.

If the PSU came with a second PCI-E cable try that, if not try the second connector on the cable.

Is the GPU sagging? try propping it up if it is.