notebook memory

[GHOST]

my dell system info tells me this -DUAL IN-LINE MEMORY MODULE, 256, 266, 32X64, 8K, 200, BURN 2

samsung pc2100 256mb ddr cl2.5

i bought this for an add on.
Corsair 200Pin 256MB DDR SO-DIMM PC-2100 - OEM

Model# VS256SDS266
Item # N82E16820145481
Specifications:
Manufacturer: Corsair
Speed: DDR266(PC2100)
Type: 200 Pin DDR SO-DIMM
Error Checking: Non-ECC
Registered/Unbuffered: Unbuffered
Cas Latency: 2.5
Support Voltage: 2.5V
Bandwidth: 2.1GB/s
Organization: 32M x 64 -Bit


i can't boot up with it installed. i added it to the extra slot, tried it alone in first slot, will only boot up with original samsung only.

so far i have not found the support voltage of the original chip.

any ideas?