Hard disk error (3fo)

[Nikhil6154]

Please install operating system.

Hard disk (3fo)

[Lil_Boy_Blue]

Hi
First:- Turn off the computer, press and hold the PWR button for 4 seconds.

Then - Leave only keyboard and mouse connected, disconnect all externally connected
devices such as Docking Station, USB storage devices, displays, and printers.
Unplug the AC adapter from the computer.

Next - Press and Hold the Power button for 15 seconds to Hard Reset.
Rinse and Repeat

NOW begin checking/testing/proving the Hardware is fit for purpose.
Power on your PC, press ESC (repeatedly), then F2 at the prompt.
Choose System Tests (Fast Test does a 4 minute hardware check).

Which will certainly show the Hard Disk as FAILED and need replacing.

You then need to install an OS etc.

https://www.microsoft.com/en-us/software-download/windows8iso

If in doubt please ask.

[Nikhil6154]

When i tried to check hard drive, it shows....

SMART check : Not installed

Short DST : Not installed

 Also no drive is shown up when i tried to install windows through bootable USB

[Lil_Boy_Blue]

Hi

Which suggests a TOTAL failure of the Hard Disk,   and/or  the connection from/to the Main Board has failed.

Initially I suggest you replace the Hard Drive as the Main Board does at least attempt to diagnose the faults.