Hello, I have a Dimension 4400 and this "blue screen" came up a couple days ago and said something about "physical dump memory error message"...I have seen this before and usually, I would just reboot and everything is fine. This time it would not let me reboot so I had to actually unplug the computer. Now, windows won't come up at all. I put the windows cd in the drive to try to get it to boot but it won't recognize it. Does this mean I have to reformat the harddrive? Could I buy a "flash disc drive" to put in the USB port (wondering if that would help it boot)? Obviously I'm not expert. Can you give me any advice?

Thanks!

Jen01