Question How do I fix my display and fan issues?

[User43562115]

OK I don't work on laptops often but was asked to replace the keyboard on this HP laptop(HP Elitebook x360 830 G). I did this because one key was broken and so I had to unassemble everything with no real experience and reassemble it again in the new laptop keyboard. I was able to do so with some ease but after I got everything plugged in, I didn't get a display but the keyboard lights are on and after a little bit the fan starts going until it reaches max speed.

Things I have already done to troubleshoot:

Checked all connections are plugged in

Reseated all cables, ram, and cpu/heatsink

Reapplied some thermal paste

Checked if it displays on an external monitor, it doesn't

I wanted to flash bios as it seemed like this could be a corrupted bios issue but the manual doesn't show how, and I have no real experience with doing so.

Any help or suggestions are great. Thanks!

 

[Aeacus]

Any help or suggestions are great. Thanks!

My advice, haul the laptop to PC repair shop and let the expert fix it.

with no real experience

To gain experience, buy dead/faulty laptops and mess around with those (or get someone to teach it to you). But taking customers (or friend's) laptop and then attempt fixing it without 0 experience is really bad idea.