Z690 Pro-A VGA troubleshooting - PSU giving 8 pins that spread to two 8 pins on the graphics card

[thepipospip153702d2]

I'm having trouble getting my system to display after buying a prebuilt computer with Z690 A mobo and intel i7 12700 CPU & gigabyte RTX 3080 oc 10gb. Since it turns on but the card don't display anything I had removed the card and tried to update the BIOS using the USB Flashback method.

although it seems like it is updating and flashing red light, the computer turns on after it seems to stop flashing
I have seen people say it should go off after updating but instead it powers on and the VGA debug LED remains on. I've tried clearing the CMOS (both by shorting the JBAT1 pins and removing the CMOS battery), but the issue persists.

I think it should at least use the dedicated card and display something but it doesn't
ps: system has no storage drives

I am somewhere where there are no technicians to troubleshoot it so I need help figuring things

 

[citay]

Without the CPU, the board would simply show the CPU LED on the EZ Debug LEDs. So it's not a particularly useful exercise.

Basically, what i said before still stands. You have to rule out as many parts as you can and narrow it down to an actual cause, either by using your parts on a different PC to see if they work there (anything like PSU, CPU if it's the same socket LGA1700, RAM, GPU...), and/or by using parts from a known good system to temporarily replace parts in your PC, testing if that makes it work.

 

[j.erhardtse156e02db]

Hi I have the same board and it has been working fine for about 3 years. Drivers can be a little tricky.
I asume you nave no acces to BIOS as no VGA. However, if CPU is genue 12700 with no letters, it has
iGPU build in. K-version has too.
Unfortunately the socket on board/CPU quickly showed to be weak and the pins on 12xxx CPU too.
CPU can bent and pins on CPU bent easy.
Tjek at first - lots of treads here a few years back.

https://forum-en.msi.com/index.php?threads/new-build-stopped-working-after-a-few-hours-lights-on-cpu-dram-vga-reboots-itself-every-15-sec-no-display-on-both-gpu-and-mobo.402918/#post-2284314

 

[citay]

Unfortunately the socket on board/CPU quickly showed to be weak and the pins on 12xxx CPU too.
CPU can bent and pins on CPU bent easy.

You mean the socket pins. On the CPU, there are only some flat contact pads. On an LGA socket, the pins are in the socket (1700 of them, with socket LGA 1700).

Yes, one could always check for bent socket pins. For that you would take off the CPU cooler, take out the CPU, and check for bent pins inside the CPU socket, also see here and the following posts. While they are technically all bent, the pins all have to look completely uniform under light, the tips of the pins have to line up in a perfect pattern, with none visually sticking out from the rest. So if you have some pins that don't look like the others, then you really have some bent pins. Ideally take some photos of the socket, upload to an image hoster and link them here, even if you don't think there are bent pins (sometimes they are not that easy to spot for the untrained eye).

 

[j.erhardtse156e02db]

You mean the socket pins. On the CPU, there are only some flat contact pads. On an LGA socket, the pins are in the socket (1700 of them, with socket LGA 1700).

Yes, sorry I mean the socket pins Shame Intel would go as low as this socket.
I would start with minium hardware - CPU and one stick of memory slot one

 

[thepipospip153702d2]

update

 

[citay]

Well, this apparently is a photo of part of your graphics card, without its cooler. The part above the middle memory chip looks like it could have sustained some damage, is this what you wanted to show us?

 

[thepipospip153702d2]

Yes I am new to electronics repair
I bought a multimeter 2 years ago but I never used it
I opened the RTX and this is what I see that bios switch looks fried
however, testing it with continuity mode it seemed functional
its body is also conductive which I am not sure affects other components
I have no idea about other components or how to test them
as I said before I will take my time to learn

 

[citay]

Nah, you're not gonna get far with a multimeter and limited knowledge in electronics repair. You know what i would do here: Check if there are PC/electronics repair shops in your area, call them and ask if you can take your whole PC there for some troubleshooting. They can easily test your parts in a PC of theirs, or test their known good parts in your PC. This is what you have to do, like i mentioned before.

 

[FlyingScot]

This video may be instructional in showing you what you need to look for at a basic level when trying to diagnose graphics card issues. However, diagnosing the problem is one thing, but repairing it is altogether on another level.

The next two videos will illustrate what you're up against when trying to fix a graphics card. Believe it or not, I find these two youtube channels excellent bedtime entertainment. I guess I’m weird Some people watch cooking shows; I watch video card repairs.

This guy is very good, and amazingly patient when it comes to the very labor intensive repairs:

This guy is like a master craftsman of the tiny world of electronics, but he’s picky about what he will spend time fixing:

 

[citay]

This video may be instructional in showing you what you need to look for at a basic level when trying to diagnose graphics card issues. However, diagnosing the problem is one thing, but repairing it is altogether on another level.

Yes. And the BIOS switch on the card, i don't see how that could break on its own, and even if it did, it shouldn't be able to affect things much. The coloring of its metal case is irrelevant too, unless there's charring or something to that extent.

First, the card needs to be tested in a known good system. When you don't know which component might be defective and which might be working correctly, there is no point in randomly trying to fix something already. First plan of action is to narrow it down more, by doing methodical troubleshooting, which doesn't involve taking things apart yet, it involves testing each component. Either by replacing it with a known good one, or by testing it in a different PC, preferably both, because there can be a failure of multiple components that depend on each other.

Lastly, seasoned repair guys like Alex from NorthridgeFix make it look easy in their videos. People can get the wrong idea that they can fix electronics that easily without experience. It's like watching the LockPickingLawyer open a lock and thinking "that looks easy, he just wiggles around a little, i can do that for sure". Skilled people make it look easy, is all.

The video shows you how to fix that specific card. So if someone gave you another card with the exact same fault, then, if you are reasonably skilled and have the same tools available to you, you can fix it following the video. It's like a cooking show. If you have all the same ingredients and the same cookware, you can get the same end result. But for each card, the "recipe" and the fix will be different, that's where the experience comes in.

 

[FlyingScot]

Lastly, seasoned repair guys like Alex from NorthridgeFix make it look easy in their videos.

But it is easy. The trick is to get your iron nice and hot before you begin. Then you just have to make sure you grab some good quality flux and your previously sourced replacement capacitor. That’s where the term flux capacitor comes from. I mean, everyone knows that. Right?