Elitebook 8440p powers on but won't boot past hp logo. Blinks capslock and numlock.

[Surfplustech]

The PC initially won't power on unless it's plugged into a power source and would complain that the battery is bad, that it should be changed. I got a new battery today and replaced the old one but the laptop will just power on, display the HP logo, after a few seconds it will start blinking the capslock and numlock LEDs simultaneously 5 times at regular intervals.

It won't go beyond that. 

Please help. 

[Lil_Boy_Blue]

Hi

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

Depending on the BIOS.....

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.

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.

[Surfplustech · Accepted solution]

Thanks @Lil_Blue_Boy, I was later able to resolve the issue. It was a simple case of the trying to boot from a non-bootable disk that was in the DVD drive. Once the disk is removed, the system works fine.