are you seeing this old favorite, the blue screen " of death"?
Firstly don't panic, in nearly all cases your data, pictures and emails are still there, the computer has gone into a failure mode. This can be a symptom of software corruption or hardware failure. This can be triggered by the installation of a program or your new hardware, i.e camera or memory stick.
You can remove any hardware, use "System Restore", or a "Last known good" option to restart your PC before the problem start.
Being a common issue we have a number of techniques to sort this annoying problem and get your PC back to a working state within hours.
