PC won't boot when HDMI is plugged in

[KMR]

Hi, I recently bought a new PC and it runs fine but there's an issue while turning it on. If I turn it off for a long enough time and then try to start with the hdmi cable plugged into the GPU, all the fans spin on full speed but nothing posts on the screen.

If I turned on the pc without the cable plugged in, it boots and goes to a normal fan speed. Then I can restart and plug in my hdmi and it works fine until the next time it's turned off for a long time.

If I take out and put the cmos battery back in, it also makes the computer boot but bios settings are reset.

 

I tried updating the bios but that didn't change anything.

 

Any help would be appreciated.

 

Specs: 

- r5 3600 stock

- gtx 1660

- 2x8gb G.Skill Ripjaws V 2933mhz cl16

- gigabyte b450m ds3h (bios vF42b)

- windows 10 pro (v1093)

- 480gb ssd and 1tb hdd

[Windows7ge]

Did you try reseating the GPU or putting the GPU in a different slot?

[KMR]

33 minutes ago, Windows7ge said:

Did you try reseating the GPU or putting the GPU in a different slot?

Yeah I've done that multiple times, and the motherboard only has one pcie slot.

[Windows7ge]

20 minutes ago, KMR said:

Yeah I've done that multiple times, and the motherboard only has one pcie slot.

It would appear the gigabyte b450m ds3h has more than one physical board that goes by the same name, and I was looking at the wrong one. Do you happen to have another GPU around we could test with? As far as I see the R5 3600 does not have an iGPU.

[KMR]

1 hour ago, Windows7ge said:

It would appear the gigabyte b450m ds3h has more than one physical board that goes by the same name, and I was looking at the wrong one. Do you happen to have another GPU around we could test with? As far as I see the R5 3600 does not have an iGPU.

I have gt730 with me. Do I have to reinstall all the drivers?

[Windows7ge]

8 hours ago, KMR said:

I have gt730 with me. Do I have to reinstall all the drivers?

If the system isn't even POSTing I don't think you need to worry about the drivers. We just want to see if it POSTs reliably with a different GPU installed.

 

If possible do you have another box you could put the question GPU in?