Thanks and I've done that (swapping memory on other slots + using another stick of RAM). I've also swapped CPU's (another E2140) and it always has problems booting up over 420+ FSB. Sometimes it works, sometimes it doesn't but 429FSB and above never works.

I don't think it's the RAM because I was using those Ballistix on my DS3L very well earlier. It's either my IP35 PRO is simply gay or it's just another dud board.

Looks like there'll be no solution for me