Memory Upgrade Problems

[qtip2]

Motherboard Epox EP 8KDA 3J
OS XP SP2 Home E
AMD 3000+ CPU

Memory Upgrade
Original setup Had two 256 Rosewill DDR400
one open slot

INSTALLED 512m ampo D400 35145588-P-R
Into Slot #1
PC Ran OK with 512 Ram

Installed one of the Rosewill DDR400 256
into Slot #2
PC Ran OK with 768 Ram

Installed Rosewill DDR400 256
into Slot #3
PC would not Boot
Does not seem to recognize 3rd Slot
Any Ideas ????????????????

 

[XtremeNuker]

Try placing the 256mb in the first 2 slots , boot up the system, if all works fine, power down and place the 512 in the 3rd slot. Try booting up, should work. But lets keep fingers Xed

 

[qtip2]

Sorry I tried that first because the 256's were in slot 1 & 2
Maybe I will have to get another 512m

 

[DaveA]

A lot of machines REQUIRE that the simms be installed in pairs?
Does yours?

 

[qtip2]

Yea I am going to buy another 512m & go from there
Thanks All