HP Elitebook 840 G6 not booting no power

[Computronik]

no power at all, no lights, if i hold the power down for 30 seconds the caps lock li

[JohnBE118]

Does it emit any beeping sounds or flashing lights? If yes, what is the specific intervals?

Is that while being plugged in the issue?

Have you tried removing the battery and powering it up with the external power supply only?

Have you tried removing one of the two RAM sticks, or replacing the only one then booting up?

[Computronik]

no beeps no lights, 

have disconnected battery and CMOS battery, no difference on batter or power, 

if i press and hold power button for 30 seconds and let go the caps lock lights up for 1-2 seconds then goes off

thats is.

i was adding another stick of RAM and the lights come on and fan Spun up, i should have disconnected the internal battery and now i assume its bricked 😞

[JohnBE118]

If you remove all the ram and try to boot, does it emit beeps?

The new ram was the right one? And did you have an electrostatic bracelet while placing it?

[Computronik]

was the same as what was already in there and no still nothing