Aye. That as well.
Many Motherboards seem to have problems with filling all the slots.
The fix I posted was for 4+GB only in vista and after re reading his issue I
totally agree with the voltage bump over clocking or not.
If that does not work remove 1 stick and try, if that works try the stick
you removed from the board (leaving the one that WAS removed out) in a
populated slot... If that works it may be a "using all slot issue" which in
it self can stem from Undervolting from a crappy PSU or not enough juice
default.
hope I helped without confusing to many people

"Lee Phillips" <lee@lee.com> wrote in message
news:N8KdnQJcPOYJ33DanZ2dneKdnZydnZ2d@bt.com...
> I've got the same board and had the same problem with four identical
> Kingston sticks.
>
> The solution for me was to (with two sticks installed) go into the BIOS
> and increase the RAM voltage up one level from default. It then booted
> fine after adding the other two sticks.
>
> Can't explain why this solved it, but I've had no problems since.
>
>
> Mr. Evilness wrote:
>> I just upgraded to windows vista premium edition 64bit. I am currently
>> running off of two gigs of ram. I have two more gigs that are the same
>> brand and model but when i put them in the computer freezes when during
>> bootup when it shows the BIOS but won't let me go into the BIOS to change
>> settings or anything. I have all of the most updated drivers and updates.
>> I do know that all four slots are working and all four gigs of ram are
>> working because i have tried just about every combination of them. Has
>> anyone else had this problem?
>>
>> Motherboard: P5N-E SLI
>> Graphics card: 7950 Geforce
>> Ram: OCZ High Performance DDR2 Memory