Screen black but sound like starting no led but have power

[Southsidede210]

Ok my hp AIO 24-g216 computer was working fine then started locking up had to shut down via power button. Then I didn’t use for like 3-4 days and when I tried to turn all I got was a black screen and the mother board or hard drive kicks on but fan does not. I have light in back indicating I have power but the led in front is not on. Really need help trying to troubleshoot before I have dish out to repair store. 

[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

AND/OR - Power on your PC, press Esc (repeatedly), then F2 at the prompt.
Choose System Tests (Fast Test does a 4 minute hardware check).

AND/OR - Windows Logo key + Ctrl + Shift + B
(This key sequence actually restarts you graphics driver (W10 only).)

AND/OR - If you’re using multiple displays, try projecting video to a different monitor.
Press the Windows Logo key + P, select a display, and then press Enter.

[Southsidede210]

Sorry just responding but been busy w/ work. I tried all that but still won’t turn on. I’m thinking gonna have to send it in to a shop to see what the damage will be. Thx you if u have any other ideas feel free to send em.