I'm trying to save this warrior, unfortunately the vertical transistor is constantly burning, and there are signs that others have already touched the board, I simply gave up on keeping the CRT, and I'm going to put an LCD in its place. The motherboard's output is a common VGA, and the power input appears to be a common ATX (I'm still not sure), but I don't know how the PSU connects the monitor together without it being on standby. I thought about making some contraption with relays, but I believe the solution is already present on its power supply board, so it would be smarter for me to repair it.

While we're at it, it was only sold with Celeron 466 and 500, but I would like to use a Pentium 3, I know it won't work immediately, but I remember that in the past there were mods with pins (and resistors?) to make Pentium 3 work with this chipset