DDR Memory Issues

[marcphisto]

i was just wondering if anyone else had this problem or has any ideas how to fix it!

i have a p4vmm2 pcb3.1 elite motherboard. i had 512MB (2x256) PC100 of sdram in it and had the opportunity to upgrade to 512MB (2x256) PC2100 of DDR for free. so i did.

now i can only put in one memory bank of DDR. if i put in a second bank my machine gets the blue screen of death citing a problem with the nv4_disp.dll. this is part of the nvidia display drivers.

i have an nvidia geforce 4 mx with 64MB onboard.

i am aware of problems with DDR and graphics cards but the usual story is to upgrade the BIOS, which i have done. All my drivers are up to date so i am quite frankly at a loss as to how to fix this.

i have also tested three individual memory banks, all 256MB, and they work but as i say if i try two banks together i get the aul BSD.

i was in touch with elite and they said that if the BIOS upgrade didn't work then the memory is at fault, i don't understand how this could be considering they work individually.

if anyone has any ideas/suggestions i would be most grateful.

 

[Burninator]

you say you already HAD "PC100" and you tried to upgrade to "PC2100"

does your mobo support the new RAM speeds

 

[PanzerIV]

Originally posted by: marcphisto
i was just wondering if anyone else had this problem or has any ideas how to fix it!

i have a p4vmm2 pcb3.1 elite motherboard. i had 512MB (2x256) PC100 of sdram in it and had the opportunity to upgrade to 512MB (2x256) PC2100 of DDR for free. so i did.

now i can only put in one memory bank of DDR. if i put in a second bank my machine gets the blue screen of death citing a problem with the nv4_disp.dll. this is part of the nvidia display drivers.

i have an nvidia geforce 4 mx with 64MB onboard.

i am aware of problems with DDR and graphics cards but the usual story is to upgrade the BIOS, which i have done. All my drivers are up to date so i am quite frankly at a loss as to how to fix this.

i have also tested three individual memory banks, all 256MB, and they work but as i say if i try two banks together i get the aul BSD.

i was in touch with elite and they said that if the BIOS upgrade didn't work then the memory is at fault, i don't understand how this could be considering they work individually.

if anyone has any ideas/suggestions i would be most grateful.

marcphisto what happens when you swap out both and put them in the one DDR bank you know works? Do they both work fine? My line of thinking is one may be bad...on the flip side do you get the error if either one is in the second bank??

You may want to run Memtest just to be sure. Then you can rule out a potential bad stick of RAM. Also, it could be that it doesn't like one of those sticks for whatever reason. Are they both the same brand or a mismatched pair?