Dell e6520 not turning on

Mcube731

Estimable
Jul 22, 2015
2
0
4,510
Hi everyone
Whenever I plug my laptop power light and caps lock's light stay solid for 15 sec and then blink, with removed battery.
When I remove hdd it does not , first it turns off but now it doesnt.
I tried to press power for 30 sec with removed hdd. Also reinstalled rams, try to turn it without rams and also one by one in different ports also removed button cell and try turning on.
Also blow air with blower machine.
Nothing helped.

There is no display and fan not working also usb ports.

I want more help. :)