Minty fresh and fully working now, the onboard video wasn't working previously but now works first try. Also the RAM slots were a bit iffy, must have had grime in them - posted perfectly on the first try.
Love it!

Not exactly a speed demon, but still cool

Decided to try out ReactOS, not sure how it will like a 300MHz CPU though!

That'll do nicely, attached firmly. 👍

The chipset has not been more than just warm, but just in case I've decided to fit a heatsink. It's not square, but the narrowest part is as wide as the chipset and only 5mm high, so it will do.

So the previous owner, when they failed to repair the board, decided to steal the Northbridge heatsink.
Very limited space, max 5mm height, let's sort that out!

Well, I couldn't get any drivers to work with the card at all, so yeah, I have to come back to it in the future.
But what I did manage to do was find 4x 256MB PC133 sticks of RAM that work in this, so I can have some fun with a 1GB RAM Pentium II 😉