Hp compaq sff 6300 beeping 5 times. No display.

[Thecreat]

No display. Beeping 5 times. What shall i do

[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; Re-Connect the AC adapter.

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).

https://support.hp.com/us-en/document/bph07107

Power button LED blinks 5 times with 5 beeps

Memory

Reseat memory DIMM modules. If the problem is not resolved, contact support to resolve a possible RAM or Main-Board failure.

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LED blinks 5 times

Main-Board

General Main-Board failure.

Test the Main-Board with the minimum hardware and reseat all the connections.

If the error persists, replace the Main-Board.