Hi,

I'm new to MATS and can only use it after watching a Youtube video, downloading the one he linked to (version 400.184) and running it without changing anything. I have no great understanding of it.

I have 3 graphics cards in the house.

My son's - Palit GTX 1080 used for 3D games constantly.
Mine - Nvidia GTX 1080 not used for 3D games, just basic stuff.
Inno3D RTX 2080 I bought faulty hoping to repair for my son's PC.

Running MATS on my son's GTX 1080 gives a pass with no errors.
Running MATS on my GTX 1080 gives...

ACER Nitro 5 AN515-55-774Z ((FH52M LA-J891P REV.1))
Intel Core i7-10750H
RTX 2060 6GB GDDR6

There was a short circuit on the video memory power supply. Replaced all memory with new memory. The short circuit is gone.

Now the laptop turns on and works. But heats up a lot. Turned on with external cooling. In Windows the video card is detected but after installing the correct drivers it gives error 43.

In MATS test on 5mb writes a lot of errors on all memory channels on the record. (Attached report)
When testing on 2mb of memory built into gpu...

- I’m troubleshooting a Gigabyte RTX 3080 Ti Gaming OC that throws read errors on all the vram chip.
- The card powers on and fans spin, but memory initialization fails.
- Powered-on measurements show FBVDDQ at 1.36 V and PEX_DVDD / PS_PEXDVDD_SW at ~0.96 V, while thermal imaging shows the FBVDDQ inductor heating up.
- Powered-off resistance tests reveal FBVDDQ Bank ~50 Ω and NVVDD ~1 Ω.
- Looking for advice on whether this pattern points to shorted GDDR6X chips or GPU internal issues, and how to identify which specific VRAM chips need replacing....

I would like to receive confirmation that the following considerations are correct:

I have a Lenovo ThinkPad T490s (NM-C891) with 16GB RAM (8 chips) soldered on the mainboard.
MemTest86 reports the following errors:
Lowest Error Address: 0x1F97B0930 (8087MB)
Highest Error Address: 0x1FB7B6DB0 (8119MB)

Dividing the 16GB into address ranges per chip I get the following table:
#1 0x000000000 - 0x07FFFFFFF
#2 0x080000000 - 0x0FFFFFFFF
#3 0x100000000 - 0x17FFFFFFF
#4 0x180000000 - 0x1FFFFFFFF
#5 0x200000000 - 0x27FFFFFFF
...

Just wanted to get some feedback,
whats peoples' success rate with cof bonding repairs.....