PC fail to signin

[Morley081]

PC 600B fails to signin because of missing hard drive partition number and can not even open Cmd. please help me

[WAWood]

@Morley081 

First off, this model is a desktop, not a laptop -- so I moved it to the right section.

Second, this issue is almost always due to a failing drive.

If your PC is new enough to support UEFI, you can use these steps to test the hard drive: http://support.hp.com/us-en/document/c00439024

If not, to check the drive you have to follow these steps:
1) Press Esc key repeatedly, several times a second, while rebooting the laptop. Do NOT hold the key down, just press it over and over.
2) Eventually, you will see an HP Startup Menu
3) Press the Function key for testing the hard drive (usually F2) and let it run.

[Morley081]

My pc HP600B desktop windows recovery is not working when I press Recovery key f11 it's loading after 1 minutes the PC turns off always it happens what can I do please help me if you may know something about this problem