The issue Description: Orange screen appears while booting This issue mostly appears in win 10 1507 update when the bit locker is on, and the pin is set. The orange screen with white lines will appear while the system was booting and ask for a bit locker pin. This is caused by the update or driver there is no clear root cause. This article will guide you to fix this error.
Solution 1: Installing windows updates
Uninstalling KB3172985, rebooting, reinstalling KB3172985, and rebooting will fix the problem (tested in dell Optiplex and HP systems) . You have to reinstall KB3172985 to make the BitLocker boot screen readable again. Press Windows + R to open the run command and type appwiz.cpl and hit enter. This command will open the Programs and Features. From the left-hand pane click on View Installed Update. Click on the KB3172985 update and Uninstall it.
Solution 2: Use Command Prompt to fix Orange screen appears while booting error
If You face this error Just type Your bit locker Blindly on top of the orange screen. Don’t try too many attempts of an invalid pin. It will cause too many attempts error and the system won’t boot. After entering pin the system will boot, Login to the system once its booted. Then open the CMD in admin mode. then type the below-mentioned comment in the terminal. 
cd\ bfsvc.exe %windir%\boot /v exit Now Close the Command Prompt and restart the system once and check. Mostly this solution will fix the issue. cheers !!!!!!!
