DDRAM prob

Hello ppl.

Im having problem installing my DDR RAM, and dont know what the problem is.

My motherboard has 3 DDR RAM slot, I have 2x 512MB DDR CHIP and 1x256MB DDR RAM chip, the 2 512 are exactly the same, but when I mount all 3 onto the mother board, it will not work, more specifically, when I put any 2 chips on the 2nd and 3rd slot, it will not work, it will only work when I put 1 in 1st slot, and 1 in any of the other 2.

I read the manual, and it says that the 2nd and 3rd must be same spec? but they are...

Please take a look at my manual which I scanned to see if you know whats going on?

www.pslover.com/files/1.jpg

Thanks.

THe link didn't work for me. What brand/model is your mobo?

hhmm, why didnt it work? what error msg did you get?
http://www.pslover.com/files/1.jpg is the full URL

my mother board is the epox 4BEA

What are the ram chips (brand and model)? You can't put two sided ram in both slot 2 and 3, so that may be your problem.

may that's it.

my ram brand is "LEDGEND" , if that helps.

how can you tell if its a 2 sided or single sided?

It would have chips on both sides. At least the 512mb sticks are probably 2 sided. You could also ask the manufacturer.

Thanks for your help.

is single sided ddr ram easy to get? or are they rare?

The bigger the module, the more likely it is double sided. Its hard to tell when buying often though, its usually not listed. I would recommend that you contact the vendor you are considering buying from to see if the ram you want is single or double sided.