Desktop and command-line troubleshooting tools

These include, but are not limited to, the following:. For example, "0xC2" , "0xB" , "inaccessible boot device" and so on. 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 click the log that you want to view. For example, click System log or Application log.

On the Edit menu, click Copy , open a new document in the program in which you want to paste the event for example, Microsoft Word , and then click 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 cannot 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 cannot guarantee that these problems can be solved. Modify the registry at your own risk. The ISO should be of 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, click the upper or lower filter, and then delete the value data. Feedback will be sent to Microsoft: By pressing the submit button, your feedback will be used to improve Microsoft products and services.

Privacy policy. You need to have admin privileges to open the troubleshoot tool from Power Automate machine runtime. Power Automate uses a file named msalcache.

If you encounter errors while signing in or signing out, try to delete this file to erase all the stored tokens. If the AppData folder isn't visible in your user folder, try to display hidden files. If you have installed Power Automate in another drive, replace C with the letter of the respective drive. Also, replace Username with the name of your user folder. The safe mode boot option is one that is usually available prior to starting the operating system. When onepresses F8, onereceives a menu of advanced options from where one can choose to boot one's computer in safe mode.

By using the safe mode boot for one's operating system, one should be in a position to enable network drivers among some many other functions.

In addition, booting through the safe mode may not boot the desktop but takes one directly to the command prompt rather than heading to the graphics display.

In a Windows operating system, all files normally have distinct file extensions such as. A file with a specific file extension can only be opened by an application designed to open it. Trying to open a file whose file extension is not compatible with a certain program can result into an error message of the file failing to open. Installation of the specific application to open specific file extensions can be a solution.

In other cases, some modifications can be made on the applications inside Windows. NTLDR files are very crucial and highly important boot files for one's computer and their deletion means that one's system will not start.

To deal with this, one should start the computer with a boot disk so that one can copy back the deleted files onto the hard drive, then carry out a system restart and the Windows operating system begins to run. The missing operating system message mainly appears in instances where oneis trying to access a drive that is configured as a boot device but with the absence of a boot loader in one's computer.

With such an error message, one may need to get into the recovery console environment and run the check disk command to check if the OS is in one's computer. In other case, one should only carry out updates on the Master Boot Record and everything gets right on track.

When the operating system isn't installed or it is corrupted, then this message appears and this message indicated that one has to do something about the installation of new windows. The missing graphical interface normally results into a dark screen that appears in instances where Windows does not start up. User interfaces and login screens are absent and therefore there could be a problem with the video system.

One should try to update the video driver or start the system in graphics mode for lower resolution graphics so as to get to a point of loading the new drivers. The graphical interface probably fails to load due to the absence of the necessary graphics drivers or a problem with the video hardware.

In such a case, try updating the video drivers or install a new version of the drivers. The invalid boot disk error message mainly appears when there is a problem with one's operating system's boot order. In addition, one can make modifications onto the BIOS configuration so as to modify the devices that should boot first on one's computer.

Fixboot command is used when one want to create a new boot sector for the operating system. By using this command, one might want to write some new booting sector in a particular partition.

When using this command, one might also require using the DISKPART command so as to identify the part or section of the disk onewants to write the new boot sector. This is a powerful troubleshooting tool that gives one the mandate to change things on the operating system without having to start windows. It is however a very dangerous commands to use. This is a command that gives one complete control of the operating system in such a manner that one can make changes to it before it starts.

The Fixmbr command is one that one can access from the command prompt. This is a troubleshooting command that one should use when the need to build another Master Boot Record arises.

One can also make changes on the drive's configurations, repartitions and reformats. The SFC operating system troubleshooting tool is one that one should prior to using one's system again in case one have ever been a victim of malware infection or hard drive corruption.

This is the System File Checker command which is able to carry out integrity scans on all the system files so as to check the validity of the operating system files. In case some malware infection replaced or brought about some damage to one of the system files, the System File Checker will identify it and prompt one to recover the file so as to put the appropriate one in place.

The system repair disk is a troubleshooting environment that is available for windows where onereceives the option to create a system recovery option, backup and restore options. In the repair disk option, one can also launch the system recovery options and commence all one's troubleshooting.

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