524288kbytes / 1024kbytes = 512mbytes .... the amount of memory detected is correct.

Ah ok, that's one thing out of the way.

Megatron-uk is correct. And I'd definitely replace those caps - they are the most likely culprit.

They are pretty easy to replace. Look online for some tutorials for replacing caps if you haven't done it before. I've done it on several boards without issue.

Yup, I see the bulging caps also

Thanks for the feedback guys. Could you share a good guide for replacing capacitors?

On a second note, I just set the FSB to 100MHz, meaning that the CPU is running at 1050MHz instead of 1400, RAM is still 266MHz. I played about 40 minutes of Quake III and it was rock stable, perhaps I'll just keep it like that and if a problem arises, I'll replace the caps.

It's now probably not drawing quite as much current, so that is why the caps don't appear to be an issue - they're likely to get worse or just completely fail at some point though.

Yes, that's probably the case. When that happens I'll probably change them or switch back to my Pentium 3. I don't have a lot of time or space to spare at the moment, so this is a temporary solution 😉

Get those caps replaced before it has a chance to damage the board. I've had similar issues with bad caps for ages! I still have a bunch of boards to fix with them as a matter of fact.

Sucks to hear you gave up on the Tually!

Here's a couple of guides from google.

http://www.capacitorlab.com/replacing-motherb … howto/index.htm
http://www.rjl.com.au/marketplace/Articles_show.asp?a=26

One thing they neglect to mention is that you don't need exactly the right caps to replace the old ones. I had a board with 1800uF 16V caps, unfortunately I couldn't find any of them locally. Instead I replaced them with 2200uF 20V and the board have been running for years since without issue.

It's good to get as close as you can to the original values but its generally OK to exceed the capacitance, temperature and voltage values slightly, (never go lower though).

You should try to stick to the same type though (the ones on your board are electrolytic so replace them with the same type).

Thanks for helping out guys, unfortunately I have little time to spare at the moment, I'll probably fix it sometime.