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Boot repair windows 10.[2022] Top Windows 10 Boot Repair Tools You Should Know [MiniTool Tips] |
Windows 10 Boot Repair - Microsoft Community.Windows 10 Won't Boot? 12 Fixes to Get Your PC Running Again
Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. Try our Virtual Agent - It can help you quickly identify and fix common Windows boot issues. This article is intended for use by support agents and IT professionals. If you're looking for more general information about recovery options, see Recovery options in Windows There are several reasons why a Windows-based computer may have problems during startup.
To troubleshoot boot problems, first determine in which of the following phases the computer gets stuck:. This pre-boot process ends when a valid system disk is detected. Windows operating system loader : Essential drivers required to start the Windows kernel are loaded and the kernel starts to run. The kernel passes control to the session manager process Smss.
Here's a summary of the boot sequence, what will be seen on the display, and typical boot problems at that point in the sequence. Before you start troubleshooting, you have to understand the outline of the boot process and display status to ensure that the issue is properly identified at the beginning of the engagement.
Select the thumbnail to view it larger. Each phase has a different approach to troubleshooting. This article provides troubleshooting techniques for problems that occur during the first three phases. If the computer repeatedly boots to the recovery options, run the following command at a command prompt to break the cycle:.
Check whether the hard disk drive light on the physical computer is working. If it's not working, this dysfunction indicates that the startup process is stuck at the BIOS phase. Press the NumLock key to see whether the indicator light toggles on and off.
If it doesn't toggle, this dysfunction indicates that the startup process is stuck at BIOS. If the screen is black except for a blinking cursor, or if you receive one of the following error codes, this status indicates that the boot process is stuck in the Boot Loader phase:.
The Startup Repair tool automatically fixes many common problems. The tool also lets you quickly diagnose and repair more complex startup problems. When the computer detects a startup problem, the computer starts the Startup Repair tool.
When the tool starts, it performs diagnostics. These diagnostics include analyzing startup log files to determine the cause of the problem. When the Startup Repair tool determines the cause, the tool tries to fix the problem automatically.
Start the system to the installation media for the installed version of Windows. For more information, see Create installation media for Windows. The Startup Repair tool generates a log file to help you understand the startup problems and the repairs that were made. You can find the log file in the following location:. For more information, see Troubleshoot blue screen errors. If the corruption in the MBR affects the partition table, running Fixmbr may not fix the problem. If methods 1, 2 and 3 don't fix the problem, replace the Bootmgr file from drive C to the System Reserved partition.
To do this replacement, follow these steps:. If Windows can't load the system registry hive into memory, you must restore the system hive.
If the problem persists, you may want to restore the system state backup to an alternative location, and then retrieve the registry hives to be replaced. Starting in Windows 10, version , Windows no longer automatically backs up the system registry to the RegBack folder. This change is by design, and is intended to help reduce the overall disk footprint size of Windows.
To recover a system with a corrupt registry hive, Microsoft recommends that you use a system restore point. For more information, see The system registry is no longer backed up to the RegBack folder starting in Windows 10 version If the system gets stuck during the kernel phase, you experience multiple symptoms or receive multiple error messages.
These error messages include, but aren't limited to, the following examples:. Specific error code is displayed. For example, 0xC2 , 0xB , or inaccessible boot device. The screen is stuck at the "spinning wheel" rolling dots "system busy" icon. If either of these options works, use Event Viewer to help identify and diagnose the cause of the boot problem. To view events that are recorded in the event logs, follow these steps:. In the console tree, expand Event Viewer, and then select the log that you want to view.
For example, choose System log or Application log. On the Edit menu, select Copy. Open a new document in the program in which you want to paste the event. For example, Microsoft Word. Then select Paste. To troubleshoot problems that affect services, do a clean boot by using System Configuration msconfig. Select Selective startup to test the services one at a time to determine which one is causing the problem. If you can't find the cause, try including system services.
However, in most cases, the problematic service is third-party. Disable any service that you find to be faulty, and try to start the computer again by selecting Normal startup. For detailed instructions, see How to perform a clean boot in Windows. If the computer starts in Disable Driver Signature mode, start the computer in Disable Driver Signature Enforcement mode, and then follow the steps that are documented in the following article to determine which drivers or files require driver signature enforcement: Troubleshooting boot problem caused by missing driver signature x Serious problems might occur if you modify the registry incorrectly by using Registry Editor or by using another method.
These problems might require that you reinstall the operating system. Microsoft can't guarantee that these problems can be solved. Modify the registry at your own risk. The ISO should be of the same version of Windows or a later version. Under the following registry subkey, check for lower filter and upper filter items for non-Microsoft drivers:.
For each third-party driver that you locate, select the upper or lower filter, and then delete the value data. Search through the whole registry for similar items. Process as appropriate, and then unload the registry hive. To fix problems that occur after you install Windows updates, check for pending updates by using these steps:.
If the Stop error occurs late in the startup process, or if the Stop error is still being generated, you can capture a memory dump. A good memory dump can help determine the root cause of the Stop error.
For more information, see Generate a kernel or complete crash dump. For more information about page file problems in Windows 10 or Windows Server , see Introduction to page files. For more information about Stop errors, see Advanced troubleshooting for Stop error or blue screen error issue. Sometimes the dump file shows an error that's related to a driver.
In this instance, follow these guidelines:. Check the functionality that's provided by the driver. If the driver is a third-party boot driver, make sure that you understand what it does. If the driver isn't important and has no dependencies, load the system hive, and then disable the driver.
For more information, see Using system file checker SFC to fix issues. If the Stop error indicates general registry corruption, or if you believe that new drivers or services were installed, follow these steps:. Skip to main content. This browser is no longer supported. Download Microsoft Edge More info. Table of contents Exit focus mode. Table of contents. Note This article is intended for use by support agents and IT professionals. Note Starting in Windows 10, version , Windows no longer automatically backs up the system registry to the RegBack folder.
Warning Serious problems might occur if you modify the registry incorrectly by using Registry Editor or by using another method. Submit and view feedback for This product This page. View all page feedback. In this article.
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