Hi @sakirkhan ,
According to this [https://support.hp.com/au-en/document/c01732674|link] a 1 blink Caps Lock/Number lock error code for HP laptops made before 2015 indicates that there is a problem with the CPU.
What is the full model number of your laptop?
Has the laptop been dropped or gotten wet at all?
Have you tried starting it with the charger connected?
What have you tried?