okay so i just bought some new RAM. i had a 64 MB chip and a 128 MB chip in my computer previously. I just purchased a 256MB chip. Naturally, I took out the 64 MB chip and replaced it with the new one. When I plugged everything back into my computer and turned it on, the inside of my computer just starts beeping and nothing else happens. So I turned it off and tried putting back in the 64MB chip where it was before and it's still doing the beeping thing, and my computer won't load. What's going on here?