I would suspect either heat (power supply fan running slowly?) or a problem with your Ensoniq sound card. You didn't mention DX in your post. Do you have DX7
a? If not, make SURE you get it. I've seen this simple update solve MANY problems.
I once took apart a Gateway G6 233 PII. There was no fan on the processor, just a big heatsink. If this is the case with your system fan/heatsink combos for PII Slot 1 start at about $15. If running with the case off helps, I'd try one. (You can always take it back.)
If it's not DX7a, then I really point the finger at a heat problem. (BTW: Hold the power button in for 4 seconds instead of unplugging your computer. ATX boards have a "soft" power switch. Holding the switch in for 4 seconds will turn it off for sure.)
Edit: OOPS
I see now you said you have DX7a. Probably heat related then....
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bloom25
THUNDERBIRDS
[This message has been edited by bloom25 (edited 08-17-2000).]