SDRAM not recognized at all

[bonestonne]

ok, so i'm running a somewhat older PC [actually all of mine are old but i wont go into that]. i have 4 SDRAM ships, and i know they at least used to work. totals to about 896MB, which i want for my Xeon board, but i'm slow on getting the power supply because a certain girl is a bit more important. back to the topic, i went to add some RAM to this computer, so i could get the VPC to run better, it was microsoft virtual PC 2004, i was using it to test the nLited XP i'm running now. problem is, none of it was recognized by this computer at all, three 256MB RAM and one 128MB of RAM...none of them came up in bios, it said there was none in the slots.

is there a way i can solve this or is that gone now? i can always use the RAM from this [i don't like it so i don't care] but i would like some more RAM in this..right now its got 256MB, i have 896MB sitting on my desk here, and none of it works...

any ideas on why? i had it in the Xeon motherboard, which is on the floor in my room mounted to the plexiglas on some motherboard mounts. did something 'staticafy' them and kill them, or is it just a matter of cleaning the contacts, because i kinda need it.

BTW, they've been in the motherboard before, and i've removed them and brought them home [they used to stay at school when i was cutting the plexi, and i could use them without problem]

[puntoMX]

- Check if it needs ECC and/or buffered RAM to work (Almost sure it needs ECC).

- Check for the latest BIOS update, sometimes that could help.

Let us know if it helped .

To add:

- Clean the contacts on the board and from the DIMMs too

- If posible test the DIMMs in other PC to make sure it´´s not the DIMMs

[Fritz the Cat]

Your board is PC100, isn't it?

A vendor told me, that, some years ago, the manufacterers changed something, he didn`t know what, so that PC133-RAMs produced after that change don't work in many PC100-Boards anymore, so they sell them as PC133-only-compatible.

I decided to try it for my S7-DFI-Board and I brought them to work only if I set the fastest timing in BIOS. 1 step slower, it randomly recognized the RAM or not.

After adding a third module, which was PC100, this was only recognized if placed in slot 1.

(all 128M)

But 1 PC133 in slot 1 and 2 PC100(64M) in 2&3 worked - quite curious.

[bonestonne]

the thing is, they've worked before for me. so this issue of them not working bothers me.

[bonestonne]

i haven't tried updateing the bios, i'm still going through HP's site trying to find an update...so far i've only found the same one i have.

overnight or when i cleaned the contacts, the 128MB chip now works, and one of the 256MB chips works. im using them now...my only concern is the other two.

when one of them is in the board, i get several beeps from the board. when the other is in the board, i get no graphics.

while i did this, i unplugged my HDD, and just went into bios to check them, rather than risking windows with the constant on/off.

i may try one of my sisters computers later to see if it works in those, but i can't try my other working PC, because it takes RD-RAM which is foreign to me, i just don't take it out too often because if it dies, i don't have any to replace it with.

[jcarle]

Sounds like either your memory or your motherboard could be damaged.

[bonestonne]

im not anticipating either way, but if anything, i hope just the RAM...its a lot easier to get than a motherboard that fits in this PC...