1. Have you made any changes to the laptop prior to this issue?
2. Do you get the 'Windows is loading file' when trying to skip the Bitlocker password?
Try to turn off the Numlock key and check. Numlock key would sometimes convert some of your letter to number keys. Try pressing the numlock key on your keyboard and check if you are able to enter letters.
Please provide us more information on the issue you are facing.
Sir,I never used the num lock key and when I pressed it,it still like that.I can't type letters only numbers.I dint change.When I was playing a game the laptop suddenly shut off.I started again but showed "Windows is loading files" and came like windows
7 background + windows XP p.Fist this Bitlocker comes then I close it then Startup repair.But I can use Command Prompet and some other tools and yesterday when I used X:\setup(x is boot) a windows 7 setup came but I don't have the disk and when I went to buy,Only
windows 8 disks were there.I have a Dell laptop which is windows 7.