I have a password set. and I just restred laptop.Now I dont know which screen i'm on.
Any hard reset button ? Hw to get into Bios ?
I gt into Bios but I could nt factory reset
In case of WINDOWS 7
After booting in to windows, press the windows button and type "system restore" and keep pressing 'Enter' with a gap of 5-10 seconds around 4-5 times. It should do the trick. BUT YOU MIGHT LOSE SOME RECENTLY INSTALLED SOFTWARES.
In other case
insert the windows installation disk, boot into it and check for a recovery partition. If you do have that, then do a system recovery from it. Else you'll have to install windows from scratch.
p.s. I'm not able to believe that you are not able to see your screen at lowest brightness. In all the laptops I've seen, even at lowest brightness you can view the screen quite comfortably.