2 ram sticks don't work together

[arockalypse]

ok, folks, here's my problem

I built my pc on EliteGroup G31T-M Motherboard and bought 1 GB of ram for it. Here are the specifications of the RAM given by Everest


Module Name OCZ OCZ2V8001G
Module Size 1 GB (2 ranks, 4 banks)
Module Type Unbuffered DIMM
Memory Type DDR2 SDRAM
Memory Speed DDR2-800 (400 MHz)
Module Width 64 bit
Module Voltage SSTL 1.8
Refresh Rate Reduced (7.8 us), Self-Refresh

It worked perfectly for me. Recently i bought anoyher stick of RAM. Here are the specifications given by me

Model Name PQI MEAER401LA0109
Memory Type DDR2 SDRAM
Memory Speed DDR2-800
Module Size 1 GB

Separately system recognizes each one on POST screen, but when i insert them together, i get only 1024 mb on POST screen.

P.S. i have 2 DIMM sockets which work nicely, so it's not a socket problem

P.P.S. i can't give the PQI ram specifications by everest because when i insert the stick, the pc boots but it won't go further than the logon screen, so i'll need to reinstall windows

 

[GhislainG]

Reinstalling Windows won't help with the probably defective PQI module. Return it and get another OCZ OCZ2V8001G identical to the one that you already have. Mixing modules is a bad idea.

 

[arockalypse]

ok, i was just wondering if there's another way;-)

 

[GhislainG]

A single module should always work. If it doesn't, then it's either defective or incompatible. Either way you want to return it.

 

[arockalypse]

Thank you, but the problem is solved! It ACCIDENTALLY worked!!!

 

[GhislainG]

By ACCIDENTALLY worked, do you mean that it previously wasn't fully inserted into the slot?

 

[arockalypse]

maybe, maybe. i'm not sure. but honestly i had checked it very carefully

 

[arockalypse]

Best answer selected by arockalypse.