first of all, i had absoulutely NO idea what to title this thread, that is the best i could do, my problem is i recently bought some memory for my computer on ebay, (ebay not the problem) i own an emachine t5048a, yeah, i know what your thinking, an emachine, but i got a sweet christmas time deal on the whole package, ANYWAYS, pretty much every website on the internet says this computer takes 184 pin memory, so i bought some, i found out the hard way this computer really takes 240 pin, that sucked, on to the problem, the computer came with 512mb of ram, when you right click "my comptuer" the click "properties" it says only 448mb, thats fine, so i lose 64mb somewhere, anyways, i got in the mail today my new memory, finally, a 1gb stick, pc4200, 240 pin, what else is weird is every website said this computer takes pc3200 memory, the stick thats already in there is clearly labeled pc4200, conveinently enough, my new memory is also pc4200, now keep in mind my computer only has 2 memory slots, with a maximum capacity of 2gb, now on to the problem, i installed the new memory, booted the computer up, right clicked my comptuer to see how much ram i have now, i was expecting around 1.5 gb, i only have 896mb now, so i shut the computer off, take out the old memory, the stick that came with it, so now theres only the 1gb stick i just bought, i turn on the computer (now with 512 less mb) right click my computer, it still shows 896mb, with the new memory in, its acting like the old stick isnt even there, do you know why? and how to fix this??