i received a dell mini 910 when i try to boot it it says no operating system found. does that mean my hard dri?

Verify the Computer Finishes Initial Power-Up (POST). In many cases a computer will not attempt to hand off control to the operating system. If you power the computer on and you see a Dell logo screen with a bar at the bottom, and that bar fills up completely and disappears, then your computer has successfully completed POST. Dell has information on some specific error messages at startup. You can also Run a Computer Diagnostic. To run PSA Diagnostics, turn on the computer and tap the key several times at the Dell logo screen. This will start the One-Time Boot Menu. Select Diagnostics to start the diagnostic assessment of the computer hardware.
Boot the Computer into Safe Mode: 1.Start the computer. 2.Tap on the keyboard during the startup process until you see the Windows Advanced Options Menu on the screen.
(If the Windows Advanced Options Menu does not appear, restart the system and try again.)
3.Select Safe mode and press . 4.Log on as the administrator or as a user with administrative access.