If it is a hard disk failure, the more you use it, the less likely it will be to recover your information.
If you do manage to get the computer started after this occurs, immediately make a backup and then call us to check what may be causing it.
Sometimes these are indications of a major problem, but most often, it is a just a minor glitch, but you should have it looked at.
We can often just remote via our QuickSupport software and do a quick check.