A new twist in Malware. Malware infections have long infected computers, and put up pop ups that claim to be Windows warning you about a bogus infection (other than their own) in hopes of getting you to pay buy their "software" to remove the threat, and prevent reinfection. The new threats follow that theme, but takes it a step further; they actually hide data and icons on the desktop to simulate a hard drive failure to increase the apparent urgency of finding a fix:
I fell for one of these "scareware" programs a couple of years ago. These guys piss me off. They should be boiled in oil.