Epox Motherboard boot problems

a) open up the case to check for any animals (for example, a mouse) that went inside your computer. Animals tend to eat anything they think is interesting (for example, a capacitor off of your motherboard!!!)

b) replace the motherboard?

Something is not passing the POST. I would reseat everything in the computer three or four times and then try to boot agian. (Be sure to unplug the power cord when doing this.) If you still have the problem, I recommend stripping the computer down to the minimum configuration for POSTing, ie. one memory stick, CPU and Video. Disconnect all other cables from the drives (data and power), unplug all cards (except video) and try to POST. If you still have the problem, try swapping out the Video card, Memory and Proc, one at a time to see which is bad. If none of them solve the problem, it is probably a bad mobo. If you didn't see the problem, start adding in devices one at a time, POSTing numerous times after installing them before going to the next until you find the one causing the problem. Save your boot drive for last, so that you don't accidentally boot into the OS.

Good Luck

First off, count the number of beeps. This is the post code you need to find in the motherboard manual. IIRC, 3 is memory, 5 video, the two most commonly needed codes. The basic codes can be found online without much effort.

Pull that component, check to make sure the contacts are clean, maybe use some canned air in the socket.

If that doesn't cut it, or the beep codes change, possibly you have a power issue. Power supplies are, to be blunt, often crap.
Your Socket 7 motherboard shouldn't need more than a 300W unit *UNLESS* you've dropped in a power-hungry addon, like a RAID controller and 4 hard drives, or a newer video card.

Consider getting (or borrowing) a 300W+ ATX power supply to see if that settles things down. You can only run a K63-450 so the CPU can't be much of a hog, but if you're limping along on a 230W PS, expect problems.