I tried installing sound drivers on NT 4 SP6a. During the process, I got a blue screen saying something about a memory dump and then I could not boot into NT after I powered off the computer and turn it back on. Fortunately, I had NT on a triple boot setup with DOS and Win2000, so I went into 2000 and deleted the sound drivers that had been installed in NT. Then I was able to boot into NT. I am not going to try installing sound drivers again, but I am wondering why installing sound drivers would cause this. The drivers were supposed to work on NT 4. Also, what exactly is a memory dump? Thanks, JM