Caps lock and num lock flashing 7 times

[VilemRousi]

Dear all,

I would like to ask you for help. I cannot run my laptop Pro Book 450 G3. The caps lock nad num lock just flashing 7 times and nothing more happens. 

I did not find the explanation for the codes here: https://support.hp.com/us-en/document/bph07107.

There is no explanation for 7 times blinking of caps lock and num lock. There is just "Power button LED blinks 7 times with 7 beeps", but Power button never blink - just the caps lock / num lock.

Do you have any idea what is the issue, or how to fix it?

Thank you for any idea.

Thank you.

Vilem

I treid to remove the bios battery but it did no help. 

[wladan]

I've tried many things but nothing helped. 

the same thing just blinks 7 times...