Here's the situation: I've played Starcraft before on other computers and they never crashed for no apparent reason. I started playing on this computer, and it didn't crash. One day my brother got new RAM, had spares, and gave me a peice, so I had three, and the two that I already had were different sizes (256 and 512MB, I think), but the computer worked just fine. My brother's RAM was 512. I took out the odd size out and matched the two 512 RAM and put them on my motherboard. Now Starcraft likes to crash. I took a look at the error messages and looked them up. One of the possible causes was bad RAM. I also recently tried to install a new game, but it didn't work. After about two hours of looking, I found someone with the exact same problem, and they were told to check for bad RAM, and apparently this fixed the problem. I want to know how to check for bad RAM. This person with the same problem as I was told to use memtest86. If you are going to tell me to use this, please include an extremely detailed HOW or I will cry in frustration. I spent the past 3 hours tearing my hair out just trying to get this on a CD and work! But if you have a much better, fuss-free way of checking for bad RAM, please do tell.