I dont have my Epox board anymore.
But i CAN tell you that Enermax PSU + Epox = disaster.
Youre right on your diagnosis, the enermax cant hold the +5v worth a crap!
I had a 431w Enermax that absolutelely hated my 8K7A.
Made me mad too, cuz I asked on this forum & "looked" around
b4 deciding to get an Enemax PSU.
It was highly reccomended.
I was happy with it , UNTIL i bought an Epox board.
I ditched the Enermax & kept the Epox.
(The "mod" for the Enermax PSU just seemed to risky for me)
Antec is a great choice.
Pretty much all I will buy anymore.
BTW: my bro is still running my old 8k7a/GF3 Ti200/Athlon 1700xp with a "generic" 400w PSU I bought at a show with no issues at all.
(thats with a Chieftec case, 5 fans & two cathodes also)
But I wouldnt reccomend buying a "generic" PSU unless youre GIVING the board away like I did. LOL