Memory problems with Asus P4B Mobo

[deathmate]

Got a problem!!!!!

I bought 3 512MB Market grade SDRAM for my Asus P4B Mobo.
When I install them and boot, Once I get to the XP welcome screen the computer reboots over and over again.

I checked the memory and all r ok.

But if I install only 2 of the 512 and one 256, it runs with no problems.

The board supports up to 3gig ram.

PLEASE HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

 

[NegativeFactor]

Have you checked the motherboard manual to see that there are no restrictions on what slots you can fill and what slots they should be in? Are there only 3 slots?

 

[deathmate]

There r no restrictions
and only 3 slots

 

[NegativeFactor]

Have you tried running with each memory module individualy?

 

[deathmate]

yes I have
all the chips work
but not all together

 

[GoNz0]

as far as i know they need to be registerd modules to support over 1 gig. or is that no more than 3 sticks unregisterd umm i'm gunna shut up now.