Virus, maybe?

It's a laptop. Windows kindly preinstalls Vista on them and doesn't give any discs with it.

She doesn't have a lot of stuff on it, and I've considered reformatting, but because there are no discs... >_<

Oh, right. I remember now that I had to make one for my Pavillion...
It said in the package: "RESTORE WITHOUT DISKS! DD SO AWESOME!!"
Then in small print: "Yeeeeeeah..... You should make a restore disk anyway though."
(Not in those exact words.)