Fiena wrote on 2025-10-27, 12:40:

I have a MSI MS-6163 v1 mainboard (Slot 1, 440BX) which suddenly died. […]
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I have a MSI MS-6163 v1 mainboard (Slot 1, 440BX) which suddenly died.

The last day that it was working, it was running Memtest86. After 5 hours and 22 minutes (half way the 2nd pass) it frooze. I turned it off and the next day it didn't POST anymore, only the fan turned on. Black screen, no peeps.

I changed the RAM, CPU, VGA and PSU. Even tried turning it on with everything removed. And did a CMOS reset. But still no beep codes. Only the fan starts spinning when turning it on.

Is it possible to repair this, or is it just lost?

The board turns on, this is already good.
You have to measure all voltages and check if the Vcore is produced correctly, ram, pci, isa.
https://en.wikipedia.org/wiki/Peripheral_Comp … nt_Interconnect
https://en.wikipedia.org/wiki/Industry_Standard_Architecture

The SIO could have died.
This is multimeter festival for you. Download the datasheet https://theretroweb.com/motherboards/s/msi-ms … v1.0-bx13#chips and check if voltages are correct for the components.

My guess is that something got withered enough to stop working within specs or a burnt component.

Fiena wrote on 2025-10-27, 12:40:

I have a MSI MS-6163 v1 mainboard (Slot 1, 440BX) which suddenly died. […]
Show full quote

I have a MSI MS-6163 v1 mainboard (Slot 1, 440BX) which suddenly died.

The last day that it was working, it was running Memtest86. After 5 hours and 22 minutes (half way the 2nd pass) it frooze. I turned it off and the next day it didn't POST anymore, only the fan turned on. Black screen, no peeps.

I changed the RAM, CPU, VGA and PSU. Even tried turning it on with everything removed. And did a CMOS reset. But still no beep codes. Only the fan starts spinning when turning it on.

Is it possible to repair this, or is it just lost?

I'm not familiar with Memtest86, but good memory tests usually run very hot on the memory and its controller (in your case, the chipset).
It looks like the electrolytic capacitors are completely fried, that's all.

These motherboards (first generation 440BX) also have two additional regulators: 1.5V and 2.5V.
But the load on them is very low, so I don't think they're the problem.
The rest is all very hardy and primitive.

The Vcore and RAM voltage should be fine. There are two CEB703AL's next to the CPU slot and they are giving 5,02V and 2,08-2,10V (there's a PIII-Katmai CPU installed requiring 2V Vcore). And next to the RAM slots is a L1084S giving out 1,5V.

The PCI slots and the SIO chip unfortunately has too small pins for me to put the multimeter probes in/on them without risking to short them out. But the power LED should be controlled by the SIO chip and it still works.

All the capacitors on the board doesn't look bulging.

Fiena wrote on Yesterday, 13:55:

All the capacitors on the board doesn't look bulging.

So the motherboard also looks functional.

PS. These motherboards also have a 2.5V voltage regulator, which is required for the older processor type (pre-CooperMine) and a clock generator chip.
If the motherboard turns on with the button and turns off when pressed for 4 seconds, then the SIO is most likely functional.

If you have a ROM writer, you might try flashing the BIOS. It's possible that the BIOS was corrupted by accidentally reading or writing to the flash area when the system froze. (I've had this happen to me a few times with an LGA775. After a crash during overclocking, the system would only boot with a Prescott CPU until I flashed the BIOS.)