Gigabyte GV-N3070Gaming OC-8GD Powers on- Device manager sees it but "error 43 stopped"

[pctravel]

I don't know the history on the card but at the key there is a small chip, see below. Looks like trace B10 3.3v and B11 React, A1 12v and A11 Reset is a little short but looks like it could still make contact. Here is exactly what it does. I was installing windows on a test PC to use with this, the card did put out video at that time uing the standard GPU (was an old version of Windows 10- v1510). Nvidea driver update said that op was too old for the latest driver so I updated to the latest windows 10 version. After fully updated Windows 10 was finished it doesn't put out video at all now. Using a riser board to test it. Hooked up to my standard desktop and it boots up using my main computer, I can look at Device manager and it does detect the GPU but is states "stopped due to problem Error 43. I do have nonconductive epoxy where I could repair the board and Silver conductive epoxy I could use to extend the trace but it seems like the PCIE socket should be still making contact. Any ideas for recommended first action? Should I start with the epoxy or tear it down and start testing resistances. I was trying to see how to put it in the PCIe socket and test continuity but can't see any of those trace tops so guess that means I need to tear down and find the first component touched by these traces to verify contact? Really appreciate anyone's assistance and advice here.

[прямо]

Unless the pins are shorted, which they aren't, a small chip is not a big deal. They still make contacts with the PCIE slot anyway.

Your code 43 indicates a problem with either the GPU core or VRAM. Because it is detected, try running MATS.

[pctravel]

Got MATTS to run. Showing bank A0 about 10 bits bad but B1 is all showing bad. Right next to each other. Thinking to try reflow before full reball. What temp solder do you find best to try. Air station temp 415c ish? 60% air? Preheat plate 100c?

[прямо]

Reflowing what? the core?

The broken connections could either be the core or the memory chips, and since these chips are cheaper to replace, I would start by reballing them first and swap positions before doing anything to the core. If the errors follow the chip, then the chip is bad, but if otherwise then you can move on to reball the core.

[pctravel]

My new memory chips should arrive shortly and I'll try those. I have a cheap t862++ IRD or a much better Air reflow station, any thoughts which way proves easier to reball these? ***Also what the heck does this SW1 on the Gigabyte 3070 card do? I just got another 3070TI card which isn't being recognized and can't run MATS and I noticed that this switch is opposite of what the picture below shows???

[pctravel]

Nevermind, switch different speed profiles. Got it.