Save open work and back up important files. Note any recent driver or hardware changes. If Windows cannot start, use the startup guide first.
Work through these checks
0 of 4 complete01Disable Driver Signature Enforcement from the Advanced Startup Options menu
Disable Driver Signature Enforcement from the Advanced Startup Options menu.
Use the instructions for your exact device and operating system. Check the manufacturer’s documentation before changing firmware, hardware, or system settings.
02Use Bootrec to repair the Boot Configuration Data (BCD)
Use Bootrec to repair the Boot Configuration Data (BCD).
Use the instructions for your exact device and operating system. Check the manufacturer’s documentation before changing firmware, hardware, or system settings.
03Roll back or uninstall the problematic driver in Safe Mode
Roll back or uninstall the problematic driver in Safe Mode.
Use the instructions for your exact device and operating system. Check the manufacturer’s documentation before changing firmware, hardware, or system settings.
04Update the offending driver file
Update the offending driver file.
Use the instructions for your exact device and operating system. Check the manufacturer’s documentation before changing firmware, hardware, or system settings.
Possible causes
- Outdated driver files with expired or invalid digital signatures
- Corrupted boot configuration data (BCD)
- Unsigned drivers installed on 64-bit systems with driver signature enforcement enabled
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