Presario 5002us
amd 800 mhz
std with 64mb sdram
i added 64 mb sdram

now trying to add 128 mb sdram to dimm 3. sdram is rk-byte 16x64 pc133 128mb sdram.

install in dimm3, restart, pc shows 128mb (not 256). move 128 to dim 1 and the 2 64's to dimm 2 and dim3. restart shows 128mb.

what am i doing wrong?:confused:

Try the new RAM by itself and see if it works at all, it may be bad RAM or it may not be compatible....