How to Fix “Windows Restarting After Sleep”: 6 Effective Ways

Fix & Repair Solved issue

Question asked by:

Rey P.


PC restarts after sleep mode

Hey folks,

You know that annoying situation when your Windows computer just restarts after sleep mode? Been experiencing this issue too and it's driving me up the wall! If any of you have come across this problem and (hopefully) figured out ways to fix it, please share the knowledge!
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Windows Restarting After Sleep

Many users face the inconvenience of Windows restarting after waking up from sleep mode. This is what we’re gonna tackle in today’s guide.
It’s truly frustrating and not having this issue solved can lead to some data loss, not even mentioning the time wasted.

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Common Reasons Why Windows Keeps Restarting After Sleep

Users often encounter their Windows system restarting unexpectedly after resuming from sleep mode. There could be various causes that are leading to this issue, let’s see some of them:

  • System Settings: Misconfigurations in system settings can lead to this issue. Adjustments such as disabling the automatic restart feature in the system settings, changing power options for the CPU, turning off fast startup, and modifying virtual memory settings can often resolve the problem. 
  • Software Environment: Software issues can also lead to reboot problems. These might include conflicts arising from recent Windows updates or new application installations. Sometimes, restoring the system to an earlier point or even resetting Windows might be necessary, though these should be last resort.
  • Hardware Environment: Hardware issues can be another cause. This includes problems with hardware drivers, which might be outdated or corrupted, or issues with the power supply unit (PSU). In some cases, components like the monitor or graphics card might not respond well after sleep mode, causing the system to reboot. Overheating of hardware components like CPUs and graphics cards can also trigger reboots. 
  • BIOS Settings: Adjustments in the BIOS, such as disabling certain CPU sleep states (like C6 and C7), can sometimes resolve issues with the computer not waking up properly from sleep mode.

4 Easy Ways to Fix Windows Restarting After Sleep Issue

Here’s the TOP quick solution for those who want to save time and money: Fix your Windows rebooting issues automatically with iolo System Mechanic (download here & run a PC-scan).

The following solutions target different aspects of the system, from software settings to hardware checks. Implementing these steps can help prevent Windows from restarting after sleep:

#1: Try Turning Off Fast Startup

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Turning Off Fast Startup

Disabling Fast Startup might resolve conflicts with sleep mode:

  • Access “Control Panel”.
  • In “Power Settings”, choose “Choose what the power button does” and uncheck “Turn on fast startup“.

#2: Disable Automatic PC Restart

Disabling Automatic Restart

To prevent Windows from automatically restarting after a system failure:

  • Open the “Advanced system settings” via the search bar.
  • In the “Startup and Recovery” section, uncheck “Automatically restart”.

#3: Try Changing Power Options for the CPU

Changing Power Options for the CPU

Modifying the power settings can help manage how the system enters sleep mode:

  • Go to “Control Panel” > Power Options.
  • Adjust the “Minimum processor state” under “Processor power management”.

#4: Adjusting Virtual Memory Settings in Your Windows

Adjusting Virtual Memory Settings

Proper virtual memory settings can enhance system stability:

  • Search for “advanced system settings” and go to the “Performance”section.
  • Ensure “Automatically manage paging file size for all drives” is checked.

2 Advanced Troubleshooting Techniques

If the above 4 ways didn’t help, try these as well:

#1: Running a System File Checker (SFC) Scan via CMD

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A corrupted system file can cause restart issues. To run an SFC scan:

  • Open “Command Prompt” as an administrator.
  • Type sfc /scannow and press ‘Enter’.

#2: Checking System Event Log

Event Viewer

The Event Viewer’s system logs can provide insights into the issue. Access the “Event Viewer” and navigate to “System Logs” > “System” for detailed information.
This could give you a good glimpse of what wrong is going on and where to look for a solution.

Did You Fix It Yet?

Resolving the Windows rebooting after sleep issue involves a mix of simple settings adjustments and more in-depth troubleshooting. If these solutions do not resolve the problem, we advise you to use the software suggested below for an automatic resolution of any software-related issues you might be encountering with your computer system.

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If your Windows restarting issue after sleep mode is still not fixed — feel free to reach out to us via email and share your problem.

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About the author
Iggy Shells
Iggy Shells - IT & PC repair expert

Iggy is the founder of He’s been involved in custom IT and security solutions for more than a decade.

Now he and his team are sharing their knowledge with the world by helping casual users solve a myriad of different computer issues, system errors, and virus/malware infections.