Troubleshooting Windows 7/8/8.1/10 boot up problems

From Dawg Wiki


BOOTING INTO SAFE MODE (Win7 and lower)

Spam F8 during boot to enter safe mode

BOOTING INTO ADVANCED MODE (Win8 and higher)

(Works only on prebuilt UEFI systems) During boot, press F11 (Depends on manufacturer) to boot into the Windows’ Advanced Boot Options. F8 and SHIFT+F8 no longer work on Windows 8 and greater Windows systems. >>Possible workaround for non-UEFI systems: The system has so called “Two consecutive failed attempts”. The computer will have to crash twice for the advanced menu to show up. If this is not the case, you will have to brute force the computer off during boot twice. If this doesn’t work, a Windows 8 or 8.1 installation or recovery media is required.

OPENING COMMAND LINE IN ADVANCED BOOT OPTION MENU(Win8 and up)

The “Open command line” option will be located under the “Recovery” menu.

CHECKING S.M.A.R.T. WITH BUILT-IN TOOLS

After command line is opened, type in “wmic” and press enter. After that, type in “diskdrive get status”. It should display the S.M.A.R.T. status of the main drive. To exit the Windows CLI prompt, just type exit and press enter

VERIFYING THE INTEGRITY OF SYSTEM FILES USING SFC

After command line is opened, depending if you're in safe mode or just command line, type "sfc /scannow" in safe mode or type “sfc /scannow /offbootdir=c: /OFFWINDIR=c:\windows” when the system is not live and running from Installer/DaRT/Advanced boot menu, and press enter. This process will take a while. It should fix missing or corrupted system files. If system still doesn’t boot after running SFC and S.M.A.R.T. shows that the HDD is OK, the system registry might be corrupted.

FIX CORRUPTED SYSTEM REGISTRY

If system registry is corrupted, the best thing to do here would be to reinstall Windows. insert a Windows installation disc into the device and boot up the installation. Do an “Upgrade” installation of the system.

DISINFECTION OF SYSTEM

Download TRON Script and run the tool in safe mode.