How to start the computer in safe mode (Safe Mode)
What is Safe Mode and why is it needed If your computer does not boot in normal mode, you can try to boot it in Safe mode.
Safe Mode is a diagnostic mode (sometimes referred to as a failure protection mode) that allows you to identify all kinds of problems caused by incorrect operation (or incorrect configuration) of the PC software or hardware.
In Safe Mode, Windows uses the default settings (the minimum set of device drivers required to run Windows: drivers for the mouse, monitor, keyboard, disks, video card; standard system services; no network support).
If the computer does not boot after installing new software, device or driver, it makes sense to try to start it in Safe Mode with a minimum set of services and change the settings or remove new software (or driver), which may be the cause of this failure.
After the computer boots in safe mode, you can do almost everything the same as in normal mode.
To start the computer in safe mode, do the following
Reboot your computer.
After your computer beeps briefly, press the F8 key.
You will see the Windows boot menu as shown in the screenshot below.
Windows Advanced Download Menu
The following boot options are available in the Windows Advanced Boot Options Menu:
• Safe mode – download using only basic files and system drivers (a mouse driver, except for a serial port mouse driver; monitor; keyboard; disks; video adapter; standard system services; lack of network connections). If the computer fails to start in Safe Mode, you may need to use the recovery console to restore the system;
• Safe mode with loading network drivers – loading using only basic files and drivers, as well as network connections;
• Safe mode with command line support – download using only basic files and drivers. After logging in, the command line is displayed instead of the Windows GUI;
• Enable boot logging – at boot, the system writes to the file a list of all drivers and services that have been downloaded (or not loaded). This file is called ntbtlog.txt and is stored in the% windir% directory. When the computer boots in Safe Mode, in Safe Mode with network drivers loading, and in Safe Mode with command line support, a list of all downloaded drivers and services is added to the boot log. The boot log is useful for determining the exact cause of a system boot failure;
• Enable VGA mode – download using the main VGA graphics driver. This mode is useful if the reason for Windows not loading properly is the new driver for the video adapter. The main driver of the video adapter is always used when loading in Safe mode (Safe mode, Safe mode with loading network drivers or Safe mode with command line support);
• Download the last successful configuration – download using registry data and drivers saved by Windows at the last shutdown. All changes made since the last successful download will be lost. This option should only be used if the configuration is incorrect. It does not fix problems caused by corrupt or missing drivers or files;
• Directory service recovery – this option is designed for server operating systems and is used only to restore the SYSVOL directory and Active Directory directory service on a domain controller;
• Debug mode – download with sending debug data to another computer via direct cable connection.
Select Safe Mode – the first line and press the Enter key.
When the computer boots in safe mode, you will see the following text message.
Click on the Yes button and you can start working with your computer in safe mode.
If the computer does not boot in safe mode
This is possible if the virus or (maybe) the trojan was deleted or damaged parts of the registry of the Windows operating system that are responsible for loading the computer in safe mode. To solve this problem, download and run the free SafeBootKeyRepair utility. Restart the pc and try to enter safe mode again.
Update 1: if the SafeBootKeyRepair utility is not available, then you can use the SafeMode Repair utility. Download and unzip, in the reg archive, a file with the default values of the registry keys ensuring the correct launch of safe mode. Double-click on the file to set these default values.
Update 2: If the previous methods of restoring the PC boot in safe mode did not help you, then try the following.