Cant enter bios setting after trying install win7

Naitsiduy

Commendable
May 14, 2016
1
0
1,510
Hi.
My PC is asus A46CB.

I want to install windows 7 on my laptop. And here is the chronology of my problem:
1. I have prepared an 8 GB flash disk with win7 installation.
2. Then I restarted my PC, and get into BIOS
3. I changed the order of booting, my Flash disk first, and the second is my original PC HDD.
4. I saved the changes and exit from bios
5. PC had blank screen, after about 10 minutes without response, I shutted it down forcely by pressing the off button
6. I turned my PC on again, just blank screen until now.

I have tried many times restarting my PC. But what I got just blank black screen.
Now, I cant get into BIOS setting and cant install win7.

Can anyone help?
Thanks in advance