I bought this model, and a year and a week later the drive crashed. After arguing, Gateway replaced the HD. One year later, it crashed again. I was getting BlueScreen Of Death dumps each turnoff. Finally once it refused to turn back on. With this history, I am assuming it is the HD again. I was working Vista HP w/ svc pak1. Percentages say I simply replace the HD, put Vista back in, and move on, right?

Try reinstalling vista again first to avoid another drive. Could be just a conflicting driver issue or deleted dll or something altered by a program or malware/virus and even virus protectors do their job too well and remove certain files that maybe a virus was attached to.

Yeah, the blue screen of death usually means there's a hard drive issue. A new drive and a Windows install should do the trick. Here's a link to a great site that sells hard drives (http://www.newegg.com/Store/Category.aspx?Category=15&name=Hard-Drives) I hope this helps!