need a little bit of help!?please

[Andy]

I have a few queries. I have bought one 256Mb, 168-pin, DIMM, 32Mx64, SDRAM, PC133, cl=2 ,sync(upgrade for fujitsu-siemens euroline PIII 900 system) and one 128Mb, 168-pin, DIMM, 16Mx64, SDRAM, PC133,cl=2, sync(upgrade for fujitsu-siemens euroline PIII 900 system) I believe the fujitsu-siemens euroline PIII system to be mine because it has the same motherboard (M6VCG) and my system is a 999MHz/1ghz, 128Mb PIII euroline system. The problem i have had is the two RAM sticks have gone into the slots with not to much hassle. i have then powered the system up and gone into the control panel (i have xp pro) performance and maintenance-see basic information about your computer and it still says 128Mb of RAM i have taken the RAM out and tried it again but the computer fails to see that the RAM is there. So i downloaded belarc advisor and it told me i had 128Mb of RAM in my computer and that the slots with the new sticks of RAM were empty. We don't have a big manual for the computer so i typed into google the motherboard of the computer and got a manual for the computer, it told me what sort of RAM i needed etc and the RAM www.crucial.com/uk site recommended me looks like they match the specifications perfectly. When the RAM arrived i went to put it into the PC and they looked slightly smaller in height than the existing stick but they were the right length. I have looked through crucials FAQ's section but cant find an answer so i hope from the information i have given you, you can tell me what is wrong? i have changed them around in order in the slots and when i put the 256MB module in the first slot the newer 128MB module in the second slot and the older 128MB module in the third slot it made a series of beeps and nothing happened on the screen does this mean its the wrong memory for my system? if not what is the problem.
please reply
thankyou
Andy

 

[BEST JD TCR]

tell me the beep sequence.

 

[BEST JD TCR]

and what are the mhz of the ram,
and whats the max for the motherboard.

 

[BEST JD TCR]

put the highest clock speed in 1st, then next highest 2nd, then 3rd.

OK?

 

[Gary Graefen]

not all bios can handle mixed memory
It is best to have matched sticks

 

[BEST JD TCR]

most can

 

[entity512]

aint good for mixed cuz they shood al run at the same speed. I put mixed in my old pc and it made it slower. 2x 128mb pc133's

 

[CoMpUtaFrEek]

Even if you have pc 100 and pc 133 in a system, if the 133 is backwards-compatible then it will run at 100, otherwise it won't work

Take the memory back, sell your current memory, and get matching stuff.