Black screen after installing BIOS

jimi1

I installed bios update after clean install windows 8 pro. Then it required restart but the screen goes black. 

The laptop seems run with fan and hard disk sound but the screen is black.

I even cannot go for boot setting.
I try a lot of method but still not work. Those are the method i use,
-I try to press on power button without power source for 30 seconds.

-I try using a external monitor but none come out.

-I try use another RAM.

-I try reset BIOS by removing the small BIOS battery.
-I give a try for installed BIOS using flash drive which using dos.
none of them are works.
then what should i do?  

but i still not sure how to installed BIOS by using dos which the bios downloaded from acer support did not include .fd file. Help me pls.

Tommy-Acer

We would suggest contacting technical support in your region for further assistance with this issue.
Acer Service and Support