CUV4X died spontaneously... have you checked the capacitors?
Possible fixes aside, your requirements are so wide there are literally hundreds of boards that would easily fit, pretty much anything from the period with 1 ISA slot. If you want games to 2002, I wouldn't recommend anything older than the CUV4X that deserted you. Maybe an early Socket A system with ISA (Abit KT7A springs to mind, at least if you're OK with replacing bad caps).
Other than that - try coming up with more specific requirements for a more specific advice 😉
Yeah, the Capacitors are fine. The board powers on, but wont POST at all. I have taken every card out, swapped RAM around, reseated things, pulled all the IDE cables out leaving only a video card, changed video cards, reset CMOS, checked jumpers (I had it set to jumper free mode), reseated the proc, loosened the screws on the board to the case, and changed power supplies. Every time, it turns on, no POST beep, and nothing....I havent taken it completely out of the case and tried, which I guess I could , but dont know how much good that'll do.
I have a P2B which I didnt think I could use for a 1 GHZ PIII until I saw the ugprade chart that mentioned I could use a SLOTKEY with Voltage Jumpers and it would work. So I ordered an ASUS S370-133 and Retention Mechanizm from ebay (got them pretty cheap to) this morning. Hopefully they will do the trick...In the meantime, I can keep messing with the CUV4X and see if I cant find the culprit to why its doing what its doing....