up grade from 2gig-4gig but can only run 3gig

[logansclaw]

Hi All

 

I have a problem and not sure where to go with it, or how to fix plus being a pc noob do's not help....

 

set up this morning..

 

mobo asus pkkpl-am se

pent dual-core e5300 2.6ghz

2 gig ram

ati radeon hd 4600 card......

OS windows 7 64 bit

 

so i got hold 2x2 gig corsair xms2

 

put both in and just got black screen and fan running plus no signal on screen

 

removed both and installed 1 new stick in 1st slot and fine, repeted this to check both sticks ok....and

 

than put new stick in 1st slot and old in 2nd slot everything fine....and than repeated this in slot 2 and had the same everything ok......so giving me 3 gig..http://www.tech-pc.co.uk/forum/images/smilies/frown.gif

 

retryed both new ram and once again black screen....and fan running plus no signal on screen

 

so at the moment running 3 gig

 

so the question is why i can't run 4 gig on my pc and if so how i sort this out....

thanks

 

mike

[KenB]

Hi and welcome to ExTS

 

Your Motherboard - is it P5KPL AM SE ?

 

If so is this the spec?

http://uk.asus.com/Motherboards/Intel_Socket_775/P5KPLAM_SE/#specifications

 

What is the exact spec for the RAM you bought?

DDR2 / PC2 6400 ?

 

Run a Crucial Scan and let me know what it recommends.

http://www.crucial.com/uk/systemscanner/?click=true

[logansclaw]

yes that is the motherboard that i have fitted

 

the scan

 

Memory:DDR2 PC2-8500, DDR2 PC2-6400

http://www.crucial.com/images11/system/icon_detail.gif

Memory Type: DDR2 PC2-8500, DDR2 PC2-6400, DDR2 (non-ECC)

Maximum Memory: 4GB

Currently Installed Memory: 3GB

Total Memory Slots: 2

Available Memory Slots: 0

1GB

DDR PC2-6400

 

2GB

 

 

 

 

 

Each memory slot can hold DDR2 PC2-8500, DDR2 PC2-6400 with a maximum of 2GB per slot.*

*Not to exceed manufacturer supported memory.

 

http://www.crucial.com/images11/system/icon_note.gif Although the memory can be installed one module at a time, the best performance comes from using matched pairs of modules.

 

http://www.crucial.com/images11/system/icon_definition.gif Memory or DRAM is the 'working' memory of the computer. It's used to store data for programs (sequences of instructions) on a temporary basis

 

and the memory

 

800mhz 2048 mb

[KenB]

Is this the RAM?

http://www.google.co.uk/products/catalog?hl=en&biw=1345&bih=542&rlz=1W1ACAW_en&q=corsair+xms2+ddr2+2gb&um=1&ie=UTF-8&tbm=shop&cid=13963316645639554412&sa=X&ei=WhXhTZiKBY2BhQex2p25Bg&ved=0CEgQ8wIwAQ#

 

If so - it would seem to be compatible with the m/board specs and the scan.

 

I have come across this before ( where the system doesn't like 2 new modules ) and the only solution was to return them.

For some reason - together - the system is rejecting them.

 

If Dalo is about he may have another suggestion.

[logansclaw]

Hi

 

thanks for the help....

[Boomer]

I recently built a system with the same motherboard and memory you are experiencing trouble with. After reading good customer feedback i purchased the memory and they worked like a dream first time. I would send them back.