Unfortunately, this is most likely a sign of a failed hard drive.
To verify that this is the case, make sure that you have removed any CD/DVD disks, disconnected any external drives or thumb drives, and removed any diskettes from the diskette drive from the computer.
Once you're sure that you've disconnected and removed all of the above, power-off the laptop by pressing and hold the power button until the laptop completely shuts-down.
Once shut down, attempt to start the computer. If the computer again displays the "operating system not found" message, then your hard drive has most likely failed and lost most or all of the data that it had on it.
Take the laptop in to a reputable service center to have them verify that the drive has failed. If it has, have them replace the drive and install the operating system and applications that you had on the old hard drive.
If you didn't have a backup of the data on your computer, also have them attempt to save any data that they are able to off of the failed drive.
Once you have your laptop repaired and running again, I suggest that you subscribe to an online backup service like
Mozy or
Carbonite to back-up your data. It costs less than $60 a year and will protect you from the next hard drive failure.
×