|Your removing the Cmos battery has nothing to do with you getting no display. The laptop will work with the Cmos battery removed. |
We hear about laptops losing their LCD display frequently.
No video be caused by either
- your main battery isn't being charged up enough for whatever reason,
- or - the backlight or the voltage inverter that supplies high voltage to the backlight is faulty.
Laptop no video, and battery, AC adapter, power jack T shooting:
See response 1:
Never plug in a video cable from a monitor when the computer is running.
Some laptops will produce a display on an external monitor without you having to do anything.
Others have a key or key combo you must press to toggle onboard LCD display / external display / sometimes, bith displays. See the Owner's or Users's manual for your model.
"to clear off the bios password."
If this is what you removed the cmos battery on....
"Product: Fujitsu Lifebook e8020 notebook"
If it's your laptop, how come you don't know the password(s) ?
You almost always cannot remove bios passwords (if you don't know it/them) on a notebook unless it's more than about 10 years old - the password info on laptops newer than that is stored on a separate chip that cannot have it's user data erased by removing the power to it, rather than in the Cmos part of the bios chip.