I just tried to replace the RAM in my old COMPAQ Presario laptop, and it isn't working.
It has two slots, and each had an SDRAM stick, 256MB (yeah i know...don't laugh) DDR 133MHz, CL2. The guy at FRY's sold me two DDR 1GB PC21, 266MHz sticks.
With the new RAM installed, when I try booting up, nothing happens. The lights come on, the fan runs, but the screen is black. It doesn't sound like the hard drive is doing anything. When I put to old RAM back in, it works fine.....if incredibly slow, which is why I'm trying to upgrade.
Without suggesting the obvious (i.e. why don't I just buy a new laptop) does anybody have an idea why this new RAM won't work? Is the guy at FRY's clueless and sold me the wrong RAM?
The best possible answer is that your laptop doesn't support a 266MHz speed RAM and/or an amount of 2GB. What's the model of your laptop? Better yet, you can check the compatibility at Compaq's website. Assuming they still keep the data sheet of your notebook.