Ddr Trouble. Help!!!

Hey, i just finished putting together my gf's pc. It works fine if i use the sdram slots, but if i throw in the ddr ram i bought for it i just get one post beep. Any idea's? Somone told me to mess with the voltage in the bios but i don't know where to begin.
Her pc's specs are:

AMD Athalon 1700+
Shuttle AK32A v2.1
2x256 Infineon pc2100 ddr 133mhz ecc (for some reason the ram says both sdram and ddr on the label)

 

Are they 184 pin SDRAM or 168 pin? If they are 184 they will only work in the DDR slots and if they are 168 they will only work in the SDRAM slots.

 

oddly enough it doesnt say on the stick. However, they are 184 pin because they fit in the ddr slot exactly and will not fit in the sdram slot. Also, i am not putting in both types of sticks at the same time.

 

You can't mix PC100/133 and DDR RAM, you use one or the other.

 

According to the manual they have to be 2.5V if they are indeed DDR SDRAM. It seems they are incompatible with the motherboard.

 

I dont know what the hell is wrong with this ram. the ddr ram is 2.5v. This is the website i wont the bid from. http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=172&item=2078140801 maybe that will help.

 

Well I would never buy something like memory from Ebay and I do not believe your motherbord supports ECC (Error Correction Code) memory either.

 

I don't think that ECC memory is an issue, if the MB doesn't support parity, it just ignores the extra data lines, it has no effect on operation. OTOH, I know of very few chipsets that don't support ECC nowadays, I have ECC in VIA, Intel, and SiS chipset systems here.

BTW Rockn, you're 100% correct about buying memory on eBay, I think that's a risky adventure.