My sister just reformatted her hard drive replacing Vista with XP, but now she can't get online. HP was no help because they said they can't support her changing operating systems. How can I help her get online? Model and other details follow: She has an HP Pavilion a1700n Desktop PC. On the HP webs...

I don't use PC's very much but I'm trying to set one up for my son and I'm encountering a very strange error when I try to boot from the XP CD and reformat the hard drive. I insert the CD and boot from it. The following error occurs: "Attempting to load an x64 operating system, however this CPU...

Computer geniuses of all stripes: What the heck happened?? I hit the back button in Firefox, using OSX 10.4.11, and I got this page!. I can't force quit Firefox, I can't shut down the computer (it times out), and I can't access the window that's behind the one shown in the picture!! Of course I coul...