Cmos battery reset

hi

i have a dell inspiron 5559, i had a problem with my ac charger being unrecognized. I wanted to turn off this warning so i can work on my computer even if the battery wasn't charging, just to remove the warning. But my laptop had an administrator password, i don't know who set it, so i wanted to reset the bios to remove the password, to disable the warning. I removed the cmos battery from my laptop and waited a couple of mins and i put it back. Now when ever i try to turn on my laptop it won't turn on the screen is black, only the fans start running much faster, before when my laptop was working fine i didnt even hear the fans running. How can i fix this?

Also my battery is dead, but i think i have a problem with the AC wire. Before i would just move the wire abit and the battery indicator would turn white, and my laptop worked perfectly fine. But now when i removed the cmos battery it won't even turn on.

I tried to place the cmos battery after one hour and it's still not working. I noticed the laptop would turn on on it's own ( only the fans) as soon as i placed the battery and the ac charger. and the battery indicator would go white and orange repeatedly.

Thank you.