To check Fast Startup, open Control Panel > System and Security > Power Options > Choose what the power buttons do. Under Shutdown settings, find Turn on fast startup (recommended). A checked box means Fast Startup is enabled; an empty box means it is disabled.
If the shutdown controls are greyed out, select Change settings that are currently unavailable first. Do not use Restart as a test: Fast Startup applies to the shutdown-to-startup path, not to Restart.
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Check the Fast Startup checkbox
The checkbox in Control Panel is the direct status indicator. Follow these steps on a Windows 10 or Windows 11 PC where the traditional Control Panel is available:
- Open the Start menu and search for Control Panel.
- Open Control Panel, then select System and Security.
- Select Power Options.
- In the left column, select Choose what the power buttons do.
- Look for the Shutdown settings section.
- Read the box beside Turn on fast startup (recommended).
| What you see | What it means | What it tells you |
|---|---|---|
| Box checked | Fast Startup is enabled | Windows is configured to use the Fast Startup shutdown mode when you shut down. |
| Box clear | Fast Startup is disabled | Windows is not configured to use that shutdown mode. |
| Control missing or unavailable | Status not established | You need to investigate hibernation availability, device capabilities, or policy restrictions before drawing a conclusion. |
The checkbox itself is the decisive check. The presence of a Hibernate command, the result of a normal shutdown, or the behavior of Restart does not substitute for inspecting this control.
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If the setting is greyed out
On the same Power Options page, select Change settings that are currently unavailable. Windows may ask for administrator approval. Once the protected controls are revealed, return to Shutdown settings and inspect the Fast Startup checkbox again.
If the option remains unavailable after you select that link, record what is actually displayed rather than assuming that Fast Startup is off. The available controls can vary with Windows version, hardware capability, hibernation support, and administrative policy.
What Fast Startup does
Fast Startup is a shutdown mode based on hibernation technology. During a Fast Startup shutdown, Windows logs off user sessions, then writes the kernel state and loaded drivers (the operating system’s session 0) to the hibernation file on disk. At the next startup, Windows can restore that saved system state instead of initializing everything from a completely cold boot.
Microsoft describes it as “a type of shutdown that uses a hibernation file to speed up the subsequent boot.” It is therefore different from ordinary hibernation, even though both use a hibernation file.
Fast Startup versus ordinary hibernation
| Feature | Fast Startup | Hibernation |
|---|---|---|
| User sessions | User sessions are logged off. | The user session and its open desktop state are saved so work can be resumed. |
| Saved state | Windows saves the kernel state and loaded drivers. | Windows saves the broader running-session state, including the user’s open work. |
| How you invoke it | It is used by the normal Shut down command when the checkbox is enabled. | It is selected explicitly from the power menu when hibernation is available and exposed. |
| Purpose | Reduce the work required on the next startup after a shutdown. | Turn off the computer while preserving the session for later resumption. |
Because the two features share hibernation technology, hibernation availability matters when Windows decides whether it can offer Fast Startup. It does not, however, prove the state of the Fast Startup checkbox. A computer can expose one power control differently from another, and the checkbox remains the reliable status check.
Fast Startup is not the firmware’s fast-boot feature
Some PCs have a separate Fast Boot or Quick Boot option in UEFI or BIOS firmware. That firmware setting controls early hardware initialization before Windows loads. The Turn on fast startup (recommended) checkbox is a Windows power setting that controls what Windows saves during shutdown. Similar names do not make them the same feature, and changing a firmware option does not tell you whether the Windows checkbox is selected.
What happens during each power action
The wording on the page can be easier to understand if you separate the three relevant actions:
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- Shut down: with Fast Startup enabled, Windows logs off users and can save the kernel and driver state in the hibernation file. The next power-on may restore that state.
- Restart: Windows performs a full boot cycle. Fast Startup does not apply, even when its checkbox is selected.
- Hibernate: Windows saves the running session so the same desktop can be resumed. This is a different use of hibernation technology from Fast Startup.
These distinctions explain why a restart can take a different amount of time from a shutdown followed by power-on. Timing either operation is not a dependable way to identify the checkbox state.
Why the checkbox may be missing
Not every PC exposes the same shutdown controls. Microsoft notes that hibernation is not available on all computers, and some devices using InstantGo may not provide a Hibernate option. Windows can also hide or restrict controls through device configuration or administrative policy.
Use the following interpretation when the control is absent:
- First, reveal protected settings: select Change settings that are currently unavailable, then look again.
- Check the surrounding controls: note whether Sleep, Hibernate, or other shutdown options are also absent. Their absence indicates that the device or current configuration may not expose those power states, but it is not a direct reading of Fast Startup.
- Consider policy restrictions: a managed work or school computer may limit which power settings you can edit or view.
- Do not infer a definite state: if the Fast Startup line is not displayed, describe its status as unknown until the control becomes available or a device-specific support procedure confirms it.
There is no universal replacement status indicator established for every computer on which the checkbox is missing. The correct response is to identify why the option is unavailable, not to treat another setting as an equivalent readout.
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How hibernation commands relate to Fast Startup
Windows includes the Powercfg command-line utility. Its hibernation switches are:
powercfg /hibernate onpowercfg /hibernate offpowercfg /hibernate on enables hibernation support, while powercfg /hibernate off disables it. Since Fast Startup relies on hibernation technology, changing that configuration can affect whether the Fast Startup control is offered.
These commands are not a direct report of the current Fast Startup checkbox state. Running powercfg /hibernate on does not by itself prove that Fast Startup is enabled, and running powercfg /hibernate off does not serve as a historical record of whether it was previously enabled. If you use either command, return to the Control Panel page afterward and inspect Turn on fast startup (recommended) directly.
Use the commands only when you intend to change hibernation
Changing hibernation configuration is a system-level change, so open an elevated Command Prompt or Windows Terminal when Windows requests administrator permission. Treat the command as a configuration change, not as a diagnostic shortcut. If your goal is only to answer “Is Fast Startup enabled?”, no command is needed: use the checkbox.
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Fast Startup does not apply to Restart. Microsoft describes Restart as a full boot cycle without the hibernation-based startup improvement. Consequently, restarting the PC and judging how quickly it starts cannot establish whether Fast Startup is enabled.
The relevant path is:
- Windows logs off the user and performs a Shut down while Fast Startup is enabled.
- The kernel state and loaded drivers are written to the hibernation file.
- The next power-on can restore that saved state.
A Restart takes a different path, so it should not be used as an experiment for this setting. If you need to know the setting, read the checkbox instead of comparing boot times.
What each result means in practice
Enabled: the box is checked
A checked box means Windows has Fast Startup enabled in the displayed power plan settings. A normal Shut down can use the hibernation-based startup path. This does not mean that every boot will use it: Restart is excluded, and other system conditions can affect startup behavior.
Disabled: the box is clear
An empty box means Windows is not configured to use Fast Startup for the shutdown path. The computer can still support ordinary hibernation if that option is available; disabling Fast Startup and disabling hibernation are related but separate configuration choices.
Unknown: the line is absent or cannot be inspected
If you cannot expose the line, the evidence is insufficient to label Fast Startup enabled or disabled. Check whether hibernation is supported and whether the device is managed, then use the manufacturer’s or administrator’s device-specific guidance if available. Do not convert “Hibernate is missing” into “Fast Startup is off” without a direct confirmation.
Common interpretation mistakes
- Assuming Hibernate proves Fast Startup: both features use a hibernation file, but they have separate controls and purposes.
- Assuming a fast boot proves the setting: startup time varies with hardware, drivers, updates and other conditions. The checkbox is more reliable than a stopwatch.
- Checking only the power menu: a missing Hibernate command does not establish the Fast Startup state.
- Confusing a disabled control with an unchecked box: an empty, editable box means disabled. A line that is absent or inaccessible means the status has not been established.
- Using Restart after changing the setting: Restart intentionally bypasses Fast Startup, so it cannot confirm a change.
Troubleshooting the most common cases
“Choose what the power buttons do” opens, but Shutdown settings are locked
Select Change settings that are currently unavailable. This action is specifically provided to make protected shutdown settings editable. If you lack administrator rights, Windows may not allow the controls to be changed; you can still need an administrator to reveal or alter them.
The Fast Startup checkbox is not listed at all
Do not substitute the Hibernate menu item, a command result, or a startup-speed observation. Hibernation may not be available on that PC, the device may use a power model that exposes fewer controls, or policy may be hiding the setting. Record the missing control as an unresolved status and investigate those causes.
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Hibernate is available, but Fast Startup is unchecked
That is a valid combination. Hibernation support and Fast Startup are related because both use a hibernation file, but they are not the same switch. In this case, ordinary hibernation can be available while Fast Startup remains disabled.
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Fast Startup depends on hibernation technology, so the lack of hibernation support can explain why Windows does not present the Fast Startup option. It still does not provide a universal, definitive status reading. Look for the checkbox after confirming the device’s supported power states and any applicable policy.
You changed hibernation with Powercfg and the page changed
Return to Control Panel and inspect the shutdown settings again. The command changed hibernation configuration; it did not report the previous or current Fast Startup selection. If the checkbox is now visible, use its checked or clear state as the answer.
A shutdown and a restart seem to behave differently
That difference is expected because Fast Startup affects shutdown followed by a later power-on, whereas Restart performs a full boot cycle. Use the Control Panel checkbox rather than timing either operation.
How to document the result for support
If you are reporting a startup problem, include the exact state you observed rather than saying only that the PC “boots slowly.” Note whether the box was checked, clear, or unavailable; whether Change settings that are currently unavailable revealed it; and whether Hibernate was listed separately. Also state whether the comparison involved Shut down and power-on or Restart. Those details distinguish a Windows power-setting issue from a firmware setting or an unrelated startup problem.
A concise verification checklist
- Open Control Panel.
- Go to System and Security > Power Options.
- Open Choose what the power buttons do.
- Select Change settings that are currently unavailable if needed.
- Read Turn on fast startup (recommended) under Shutdown settings.
- Checked means enabled; clear means disabled.
- If the line is missing, leave the status unconfirmed and investigate device support or policy.
- Do not use Restart, boot timing, or a hibernation command as a substitute for the checkbox.
Frequently asked questions
Is Fast Startup the same as hibernation?
No. Fast Startup logs off user sessions and saves the kernel state and loaded drivers; ordinary hibernation saves the running session so it can be resumed. They use related hibernation technology but serve different purposes.
Does a checked Fast Startup box affect Restart?
No. The setting applies to the shutdown-to-startup path. Restart performs a full boot cycle.
Can I determine the setting with powercfg /hibernate on?
No. That command changes hibernation configuration. It is not a direct readout of the Fast Startup checkbox. Inspect the Control Panel setting after any hibernation change.
What if my PC does not show the checkbox?
Reveal unavailable settings first. If it remains absent, the status is not established; device capability, hibernation availability, or administrative policy may determine what Windows exposes.
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Is the BIOS or UEFI Fast Boot option the same thing?
No. Firmware Fast Boot controls early hardware checks, while the Windows checkbox controls the hibernation-based shutdown path. Check each setting in its own interface.
Why is Fast Startup checked but the next boot not noticeably faster?
The checkbox shows the configured mode, not a guaranteed boot time. Restart does not use Fast Startup, and hardware, drivers or other system conditions can affect startup.
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Can I leave Fast Startup disabled and still use Hibernate?
Yes, when hibernation is supported and exposed. The two options share technology but represent separate configuration choices.
What should I tell an administrator if the setting is locked?
Report that the checkbox is unavailable even after selecting Change settings that are currently unavailable, and include whether hibernation and other shutdown options are visible. A device policy or capability may be controlling the page.
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Where is the Fast Startup setting in Windows?
Open Control Panel, go to System and Security > Power Options, and select Choose what the power buttons do. Under Shutdown settings, read Turn on fast startup (recommended).
How do I know whether Fast Startup is on?
A checked Turn on fast startup (recommended) box means it is enabled. An empty box means it is disabled.
What if the checkbox is greyed out?
Select Change settings that are currently unavailable, approve administrator access if requested, and inspect the checkbox again.
Does Restart use Fast Startup?
No. Fast Startup applies to Shut down followed by a later power-on. Restart performs a full boot cycle.
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Is Fast Startup the same as Hibernate?
No. Fast Startup logs off users and saves kernel and driver state; Hibernate saves the broader running session for later resumption.
Does powercfg /hibernate on show whether Fast Startup is enabled?
No. It changes hibernation configuration. The Control Panel checkbox is the direct status check.
Why is the Fast Startup option missing?
Hibernation may not be supported or exposed on the device, a power model may provide fewer controls, or administrative policy may restrict the setting. A missing line does not prove that Fast Startup is off.
The Bottom Line
Use Control Panel > System and Security > Power Options > Choose what the power buttons do, reveal unavailable settings if necessary, and read Turn on fast startup (recommended). Checked means enabled; clear means disabled. If the line is missing, treat the status as unconfirmed rather than inferring it from Hibernate, Powercfg, Restart or boot speed.
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