HP laptop Not turning on

Gokul_P · March 23, 2023

I got a almost Destroyed Hp laptop today The disply is broken, Some cables is missing (Touchpad, Power button, Optical drive, wifi card), No harddrive The laptop do take power and the usb ports is getting power and the power led is on Cpu heatsink (It is passive cooled) and when i plug in a harddisk it is spinning up But the problem is It doenot disply anything The internal screen flickers so does any external screen it just flicker and go back to no signal Does anybody know any fix

The Troubleshooting i did

Connected a external keyboard and tried anyof the locks light up (Num lock, Scr lock...) It didnt

Connecting Multiple other Things to usb all recive power but no data

Plugged in RJ45- No life there also (No light on the switch or on the port) (But plugging into a router i have lying around the light on the router is on but no mac adress in the clients list)

Tested with or without the battery

Tested with or without the screen

removed all cables that is not necceray (But it is hp so)

Reseated the ram

Resetted the bios

Removed cmos battery (it does have charge)

No Shorts atleast with my testing i cant find anything getting warmer that is not meant to get warmer

The ram is not getting warm But it is Low power DDR3

Even when Harddrive is spinning the HDD led is not turning on

SPECS if You want HP 15-bs545TU - https://support.hp.com/in-en/document/c05562630

If i plug anything into this Device the monitor Come back from sleep but it just says No signal The monitor is LG and if iam on a another source osd is saying input available for switching

Gokul_P · March 24, 2023

There is multiple components missing in the board so i guess That are important so PROJECT CANCELLED.

The only thing that is reusable is the 4GB DDR3L Ram and if i ever get another broken hp from this era i might be able to fix it By using this board as a Donor board and it was a fun journey.