Having boot problems on your Windows PC? Everything was fine but the computer just didn’t want to boot; Windows Update stuck loop; boot to a black screen; received errors like: Windows wouldn’t recognize disk one day; got error messages: Invalid Boot.ini, Windows could not start, Windows could not start because the following file is missing or corrupt: \WINDOWS\SYSTEM32\CONFIG\SYSTEM. Most of the common Windows boot or star up problems appears because of a corruption in the Windows registry. You can fix most problems by doing the following procedures.