Question Black screen without peripherals, works sometimes ?

[Rexares123]

(Sorry if this is oddly formated, i had to write it from my phone)

This is weirdly inconsistent

After changing my rx 6600 to a rx 6750 xt (second hand, two months), when i boot my pc or wake it from sleep it doesnt display anything , the peripherals are off and there is no disk activity, the only thing working are the fans and a decorative light the motherboard has.

Sometimes it decides to reach the screen with the bios logo. And sometimes it fully boots up and it works as normal. When it boots fully it works completely fine but i cant put it to sleep or put it off without the problem appearing again.

System:
Mobo: gigabyte b450m ds3h
Psu: corsair cv 650
Cpu: ryzen 5 5600x
Gpu: rx 6750 xt
3 ssds

Things i tried:
-Reseating RAMs
-Using Old RAMs
-Booting up without the gpu
-Removing Cmos battery for 30 seconds
-Check if the cables are loose , removing and setting then up again (minus the main one connected to the motherboard because its to hard and the mobo bends)
-booting up without the SSDs
-One of the times it booted i tried to update drivers and BIOS
I noticed that when its on the hour its not right , even if in automatic and connected to net

 

[Aeacus]

If you put your old RX 6600 back in to the build, does the PC work without issues?

Since if it does, issue is with your used GPU (RX 6750 XT).

-Booting up without the gpu

Your CPU doesn't have iGPU in it, so, of course the PC won't display anything if you remove the dedicated GPU.

Psu: corsair cv 650

Low quality PSU. Should not to be used with any PC.

I'd get new PSU regardless, like Seasonic Focus or Corsair RMi/RMx, in 650W range.

Could be that the issue is with your PSU as well, since you went from 132W GPU to 250W GPU. Essentially double the power consumption for GPU. And your low quality Corsair unit not being able to handle it, wouldn't be that big of a surprise.

I noticed that when its on the hour its not right , even if in automatic and connected to net

Replace CMOS battery with a new one.

 

[Rexares123]

If you put your old RX 6600 back in to the build, does the PC work without issues?

Since if it does, issue is with your used GPU (RX 6750 XT).


Your CPU doesn't have iGPU in it, so, of course the PC won't display anything if you remove the dedicated GPU.


Low quality PSU. Should not to be used with any PC.

I'd get new PSU regardless, like Seasonic Focus or Corsair RMi/RMx, in 650W range.

Could be that the issue is with your PSU as well, since you went from 132W GPU to 250W GPU. Essentially double the power consumption for GPU. And your low quality Corsair unit not being able to handle it, wouldn't be that big of a surprise.


Replace CMOS battery with a new one.

Thanks for replying

Regarding the igpu i didnt expect to get a display but only wanted to see if power reached the peripherals without the gpu.

Ill try replacing the psu

 

[Aeacus]

Ill try replacing the psu

This time around, do get good quality PSU, rather than: "cheap/ budget/ value" low quality crap, that you already have.

I've listed some good quality PSUs, which by the looks of your wallet, are affordable. But there are far more and if you'd like more options, ask.

 

[Rexares123]

After changing the PSU to a Corsair RM750x and the CMOS battery it still happens, but less frequently.

 

[Aeacus]

How about this:

If you put your old RX 6600 back in to the build, does the PC work without issues?

 

[Rexares123]

No, it doesnt. And The rx 6750xt works well the times it actually boots.
I suspect the problem its the motherboard because when i tried with only cpu the fans where on but there was no POST but i still dont know why it boots well sometimes

 

[Aeacus]

when i tried with only cpu the fans where on but there was no POST

I already said that without dedicated GPU, your PC won't work. So, how can you tell that things were better, if you didn't see any video output?

I suspect the problem its the motherboard

Could be MoBo. Could be CPU. Or even RAM.

Regarding RAM, test the build by using only one stick of RAM.

Here, it is unknown if you have 1 bad RAM stick or two sticks doesn't want to work together anymore. This can be found out by testing, but it will be tedious.

I suggest marking two sticks individually (e.g with sticky note) so you know which is which; afterwards start the testing, which is:

DIMM 1 in 1st slot - tests - yes/no for image,
DIMM 1 in 2nd slot - tests - yes/no for image,
DIMM 1 in 3rd slot - tests - yes/no for image,
DIMM 1 in 4th slot - tests - yes/no for image,
if the new RAM came as a set of 2 then:
DIMM 2 in 1st slot - tests - yes/no for image,
DIMM 2 in 2nd slot - tests - yes/no for image,
DIMM 2 in 3rd slot - tests - yes/no for image,
DIMM 2 in 4th slot - tests - yes/no for image.

While this testing is very tedious, it's only way to confirm RAM issues with MoBo on hardware level.
Ideally, you should see image in all 8 tests. If so, both RAM sticks, will work on their own, in all RAM slots of a MoBo.

Of course, with a RAM set of 2 and when both sticks doesn't want to work together, there would be another set of testing with 2 sticks at once, e.g:
DIMM 1 in 1st slot + DIMM 2 in 2nd slot - tests - yes/no for image,
DIMM 1 in 1st slot + DIMM 2 in 3rd slot - tests - yes/no for image,
DIMM 1 in 1st slot + DIMM 2 in 4th slot - tests - yes/no for image,

DIMM 1 in 2nd slot + DIMM 2 in 1st slot - tests - yes/no for image,
DIMM 1 in 2nd slot + DIMM 2 in 3rd slot - tests - yes/no for image,
DIMM 1 in 2nd slot + DIMM 2 in 4th slot - tests - yes/no for image,

DIMM 1 in 3rd slot + DIMM 2 in 1st slot - tests - yes/no for image,
DIMM 1 in 3rd slot + DIMM 2 in 2nd slot - tests - yes/no for image,
DIMM 1 in 3rd slot + DIMM 2 in 4th slot - tests - yes/no for image,

DIMM 1 in 4th slot + DIMM 2 in 1st slot - tests - yes/no for image,
DIMM 1 in 4th slot + DIMM 2 in 2nd slot - tests - yes/no for image,
DIMM 1 in 4th slot + DIMM 2 in 3rd slot - tests - yes/no for image.
it's pain in the ass to do.
But it is also the only way to test out if 2 sticks of RAM will work together, by trying out all possible combinations.

 

[Rexares123]

Even without the gpu it should beep if it has a motherboard speaker plugged in , right?
When it doesnt works it doesnt POST.

I didnt think it was a RAM problem because one of the times it turned on i used memtest86 and there was no errors

 

[Aeacus]

i used memtest86 and there was no errors

How many tests and passes?

 

[Rexares123]

4 passes 1 test

 

[Aeacus]

Memtest86 contains 14 tests,
list: https://www.memtest86.com/tech_individual-test-descr.html
and one full pass is bare minimum. 2 full passes are better while 4 full passes is considered acceptable in terms of RAM testing.

So, running only one test four times is not enough to validate if the RAM works fine. You have to run all 14 tests, with 4 full passes for that.

 

[Rexares123]

Will do

 

[Aeacus]

Do note that for one full pass, it takes ~1h for single 8GB RAM stick. Or ~2.5h if single stick is 16GB. So, depending if you have 2x 8GB or 2x 16GB, one full pass will take either ~2h or ~5h. 4 full passes would take ~8h (2x 8GB set) or ~20h (2x 16GB set). Something to keep in mind.

 

[Rexares123]

It has ended right now. 0 errors 4 passes

 

[Aeacus]

Then it comes down to MoBo or CPU. No way to test those in single system. Need to have 2nd, compatible system, to test those out.

 

[Rexares123]

After changing the mobo, it seems to be working fine.

Thank you