memory

[lazydog]

i have 4 sticks of 512 and all the #match to what the computer calls for but when i install them when i boot the computer a screen comes up telling me that the memory has to match .i can only use the 1g stick i have

[Buzzard7]

If you are trying to use dual channel the memory has to be matched sets. Being all the same part numbers is not going to work. When you go to buy memory for a dual channel system you need to buy the kits that are matched to each other at the factory.
Kingston technologies will list it as a kit with a part # like this
KVR800D2N6K2/2G the K2 means it is a matched set and the 2G at the end means it totals 2 gig
That would be a kit of 2 matched 1 gig sticks at 800Mhz.

[Chalenge]

We need more information I think.

Depending on the motherboard you may not be able to boot without making changes in the BIOS and this message could be the result of the MB not running stable with four sticks used.

[lazydog]

the MB is a intel d875pbz if thats what you mean

[Buzzard7]

Check this page out.
http://support.intel.com/support/motherboards/desktop/D875PBZ/sb/CS-021822.htm
That would be an older board. It doesn't use dual channel so disregard my first post.

[BaldEagl]

Is this what you have?  184-pin DDR SDRAM DDR 400 or DDR 333.

If not it won't work.

[lazydog]

thats it

[lazydog]

buzzard i looked at that its telling me to take out the video card then put in the new sticks .should i turn on the computer with out the video card ? and for how long?

[Dragon]

Try adding the memory without the VC, plug the monitor back into the onboard output, set the memory up in bios.  Restart comp.  Check memory.  Turn off comp.  Install VC, switch monitor cable, turn back on, check system.

[Buzzard7]

Dragon has it right if there is onboard video. They say to take out the card so you don't damage it or the memory retention mechanisms. If there is no onboard video to plug into then take the card out,install the memory and then re-install the video card. Turn on your machine and check the bios to see if it sees it. If the bios doesn't see the memory then you might have to change settings in the bios or find memory that is compatible.

Put the memory part #'s up here and maybe we can help you decide if they are right/

[Chalenge]

Most important is to remove the power cord from the PSU before removing or installing memory and use a wrist grounding strap (I think if you maintain skin/case contact you will be alright). I think removing the video card is to ensure clearance of the locking tabs of the memory so after the memory is in you should be fine to reinstall the video card.