Hello, Today I tried to install a new 256mb ram chip into my g4 ibook. The specs of the chip are: Corsair 256mb 200-pin 333mhz DDR SO-DIMM When I installed the chip and turned on the computer, it started to boot but then the screen darkened and came up with the "you need to restart your computer. Hold down the power button..." dialog. I tried 3 times. Can anybody tell me what's wrong? I took the new chip out and now it acts fine again. Is this the correct chip? Am I putting it in wrong?