Question PC Won't Turn On When My Graphics Card is Installed, Boots with Integrated Graphics

[ovcdev7]

The other day I was playing Borderlands 3 and my monitor lost signal and wouldn't turn back on. I tried to reboot to no avail. Since then, when I plug in the graphics card, there is a brief flash of light RGB light on the GPU, but the PC fails to post. There is no error light on the motherboard. It should be noted that when the GPU is connected to my PSU, there is a white LED that turns on(indicating power) and there is also the RGB flash when I try to boot. This morning, I finally got around to disassembling and testing everything and I found the following:



1. The motherboard boots when everything is unplugged.

2. The motherboard boots when my main CPU is plugged in, but shows a CPU Error LED( I assume due to lack of graphics?)

3. The motherboard boots when just my APU(from my mini office PC) and RAM is installed.

4. The motherboard does not boot when the G-card is plugged in.

5. The motherboard does not boot when the G-card is plugged into the PSU, but not the PCIe slot (neither)



All of this has led me to believe that it is the PSU that is faulty, but I would like the opinion of those more knowledgable than I am on this topic because this is my first built PC .



note: When the PC initially failed, it was plugged into a power strip, for all my testing it was plugged into the wall and through a voltage stabiliser, no difference was observed.

I have also tried reseating all the wires tightly.



PC PARTS:

Mobo: MSI B450 Gaming Pro Carbon MAX WIFI s-AM4 B450

GPU: Asus PCI-E GeForce RTX2070 Super 8GB DDR6 (ROG-STRIX-RTX2070S-O8G-GAMING)

CPU: AMD Ryzen 7 3700X s-AM4 3.6GHz/32MB BOX (100-100000071BOX)

APU: Ryzen 2200GE OEM from Lenovo Thinkcentre

PSU: 650W Corsair RM650X (CP-9020178-EU)

RAM: 2x8Ripjaws V and 2x8Trident Z RGB(32GB Total)



Any suggestion would be greatly appreciated.

 

[DRagor]

5. The motherboard does not boot when the G-card is plugged into the PSU, but not the PCIe slot (neither)

This makes me think the problem is GPU being shorted somewhere. PSU detects the short at startup, protection kicks in and PSU does not start. It could be PSU too, but considering it is quality model and it runs your system fine without GPU I doubt it.

 

[ovcdev7]

This makes me think the problem is GPU being shorted somewhere. PSU detects the short at startup, protection kicks in and PSU does not start. It could be PSU too, but considering it is quality model and it runs your system fine without GPU I doubt it.

How do I go about testing this? There is no rattle on the GPU when I shake it. It has never given me any problems prior to this incident.

 

[DRagor]

How do I go about testing this? There is no rattle on the GPU when I shake it. It has never given me any problems prior to this incident.

The only real way is to check different GPU in your system. If it works fine then most likely your GPU is dead (well maybe it's repairable but most likely not at home).
The other way is to test your GPU in other system, but if it is shorted as I suspect then it would not be safe for the other PC (if it had PSU of lesser quality).

 

[LaceMusic]

I am having the same problem, for me it has happened a lot and I am just trying to find a permanent solution or something that works most of the time

 

[LaceMusic]

I have also had this issue before and simply using the reset button has worked before. Now it has stopped working for whatever reason though

 

[ovcdev7]

I am having the same problem, for me it has happened a lot and I am just trying to find a permanent solution or something that works most of the time

Do you have an ASUS GPU?

 

[ovcdev7]

The only real way is to check different GPU in your system. If it works fine then most likely your GPU is dead (well maybe it's repairable but most likely not at home).
The other way is to test your GPU in other system, but if it is shorted as I suspect then it would not be safe for the other PC (if it had PSU of lesser quality).

That's unfortunate, I don't have another GPU

 

[LaceMusic]

I have

Do you have an ASUS GPU?

I have an XFX Radeon rx 570... a bit of a potato

 

[ovcdev7]

The only real way is to check different GPU in your system. If it works fine then most likely your GPU is dead (well maybe it's repairable but most likely not at home).
The other way is to test your GPU in other system, but if it is shorted as I suspect then it would not be safe for the other PC (if it had PSU of lesser quality).

That's unfortunate, I don't have another GPU

 

[ovcdev7]

I have

I have an XFX Radeon rx 570... a bit of a potato

NOT a potato, it's as good as the 1060, which is the most popular GPU on steam

 

[DRagor]

That's unfortunate, I don't have another GPU

Well then, this is where your testing ends. You will have to make your decisions based on what you know already.