Does the Windows computer freeze, crash or just not escape the snuff? It could be a bad application, a strange driver, or even a faulty hardware.
One way to solve the problem on a Windows computer is to start the operating system in safe mode, which starts Windows in a clean, unadulterated barebones fashion by preventing the loading of certain drivers and other items. If Windows works fine in safe mode, it usually means that the error is in a particular driver, service, or plug-in that would otherwise be automatically loaded.
The steps provided here assume that you can boot at least in Windows and access the Safe Mode feature.
To start Windows 1
0 in safe mode
Type msconfig in the search box at the bottom of the screen. Click System Configuration at the top of the search results, or simply press Enter.
Alternatively, you can also click the Start button, scroll down the Apps list, and open the Windows Management folder. Click the system configuration shortcut.
In the displayed "System Configuration" window, your current setting is likely to be Normal Start or Selective Start. Click the second option to start diagnostics, which only loads basic drivers and services.
Note that the drivers and services for Audio, Network, and certain other features are not loaded with this option, so you will not use these features or can test. OK click. In the system configuration message, click the Restart button to restart the computer immediately.
After restarting your PC, log back in to Windows and try to reproduce the problem that occurred. Regardless of whether the problem persists or not, you still need to run additional tests to narrow the problem. Reopen the System Configuration tool. Click the Boot tab. Select the Safe Boot check box.
Under Secure Boot, there are four different options: Minimal, Alternative Shell, Active Directory Repair, and Network.  Minimal loads only the minimal drivers required to run Windows, but brings you to the GUI so you can navigate with the mouse.
Among these options, Minimal and Network are probably the most useful options for average troubleshooting. Select Minimal, restart the computer, and try to reproduce the problem. Do the same with Network.
If the problem does not recur, you can always reopen the system configuration and try to boot in normal mode, and see if the problem is really resolved. Otherwise, some of the other options in the Boot section of System Configuration may be helpful. When starting Diagnostic or Safe Boot, you will not be able to use a GUI, startup logs, base videos, and OS startup information. You can activate one or more of these four options.
No GUI Startup
No GUI launch disables the animated points during startup and is therefore not very useful for troubleshooting.
The boot log generates a special text file that shows you which drivers were loaded during startup and which were not. This is a helpful troubleshooting option. Enable the startup protocol and restart your computer. Log in to Windows. Start File Explorer and open the following file: C: Windows ntbtlog.txt . Check the file for the status of each driver.
Basic video loads the drivers for the standard VGA video adapter instead of the driver for your specific graphics card or hardware. This option is a useful way to troubleshoot graphic display problems.
OS Startup Information
OS Startup Information
Displays a List of drivers and other information when you start your computer. However, it only works on Windows 7, not Windows 10 or 8.1.
Restart the PC with each option separately and check if the problem exists.
Disabling suspected troublemakers
In addition to the built-in Safe Mode options, you can check which services and launcher programs are loaded, and disable any services that you think are causing problems. In the System Configuration window, click the Services tab. Here you will probably see many services, many of which are difficult to decipher. So you leave most of them alone. However, if you find that an easily identifiable service is listed as running, disabling the service is another troubleshooting option.
About Identification If you can narrow the problem down to a specific driver or service, you can do a Google or Bing search at this point
Quick Start Safe Mode on Windows 10 (or 8.1)
If you run Windows 10
or 8.1, you have other options for starting Safe Mode. In Windows 10, click the Start> Settings> Update & Security> Restore button. In the Advanced Startup section, click the Restart Now button.
. If you still have Windows 8.1, launch the Charms bar and click Privacy charmes> Change PC settings> Update and restore> Restore . In the Advanced Startup section, click the Restart Now button.
At this point, Windows 10 and 8.1 display a blue screen. Select Troubleshooting> Advanced Options> Startup Settings> Restart . On the next screen Startup Settings, press one of the buttons from 1 to 9 to select a specific startup type, eg. For example, 1 to enable debugging, 4 to enable Safe Mode, or 5 to enable Safe Mode with Networking. Then click the Restart button.
Your PC restarts with the startup type you selected. You can now try again to reproduce the Windows problem to see if you can narrow it down and hopefully solve it.