What is FAST-BOOT-HANG?
This medium-severity issue affects the firmware. The computer won't start because it's stuck in the fast boot phase. This can also stem from incompatible USB device connected. Follow the steps below to fix it.
Common Causes
- Incompatible USB device connected
- Conflict between Windows Fast Boot and BIOS Fast Boot
Step-by-Step Fix Guide
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1
Disconnect all USBs except the keyboard and reboot
Most reports of FAST-BOOT-HANG clear up after Disconnect all USBs except the keyboard and reboot, so it's worth trying before anything more involved.
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2
Reset CMOS (by removing battery)
A recurrence usually points to a rarer sw-bios instability cause, which is what the following steps are meant to catch.
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3
Turn off Fast Boot
If earlier steps didn't help, "Turn off Fast Boot" directly addresses conflict between Windows Fast Boot and BIOS Fast Boot.
Commands & Diagnostics
powercfg /h off
Frequently Asked Questions
The leading cause of FAST-BOOT-HANG is incompatible USB device connected, though conflict between Windows Fast Boot and BIOS Fast Boot also show up in our reports.
The fastest fix is "Disconnect all USBs except the keyboard and reboot". Only move on to the later steps if FAST-BOOT-HANG keeps coming back.
FAST-BOOT-HANG is a medium-severity issue. It can affect system stability, but the fix steps above typically resolve it without lasting damage.
In most cases, yes — the guide above resolves FAST-BOOT-HANG without a clean install. Treat a reinstall as the last resort, not the first move.
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