Nope... For me Business X86 installs just fine... (Q6600@3,4 GHz + A-Data Extreme 2x2GB @ 2,1V) Works...like a charm So my guess is, that Memory Voltage is`nt the culprit here... What I Think is some memory configurations... For Instance... 1GB+1GB+512+512... FAIL (All was corsairs XMS series, same model, Dual channel kits)... Removed 2x512MB Sticks... installed & worked... added 2x512MB sticks back again.. (after install) works also ... [All based from my, friends computer) So my guess is , that "overvolting" your RAM doesn`t help... What counts is Memory configuration it self... EDIT: My final opinion is that= Vista is very sensitive how do you place, your Dual channel memory... IF all sticks are same "capacity" and Identical... problem doesnt occure... if they are somewhat different...there, will be a problem...