When installing a software, the system prompts "Cannot access Windows Installer service", especially when installing the .msi installation package. In Windows 7, such problems still exist, mainly caused by the Microsoft Windows Installer service. The .msi installation package also needs to be called when the installation is installed, and once there is a problem with this service, it will cause the above error of the system home. Methods
The solution is simple:
* Start - All - Accessories - Command Prompt
* Right - Run as administrator
* input and enter
regdeleteHKLM\\SOFTWARE\\Microsoft\\SQMClIEnt\\Windows\\DisabledSessions /va /f
*
Win7 restart the system enters safe mode winXP and similar operations, Method 1: Boot the F8 key before entering the Windows system startup screen; Method 2: Hold down the CTRL key while starting the computer. The system multi-operation boot menu will appear. At this time, you only need to select “SafeMode” to enter the safe mode directly. Operation Guide
under
Windows7 Safe Mode 1. Delete stubborn files
delete some files in Windows normal mode, or clear the Recycle Bin, the system may prompt "File It is used and cannot be deleted." In this case, we can delete it in safe mode. Because in safe mode, Windows automatically releases control of these files. The
2. System Restore in Safe Mode
If your computer can not start now, only in safe mode, then you can restore the system in safe mode. After entering the safe mode, click "Start" → "All Programs" → "Accessories" → "System Tools" → "System Restore", open the System Restore Wizard, and then select the "Restore my computer to an earlier time" option, click The "Next" button, click on the date displayed in bold on the calendar to select the system restore point, click the "Next" button to perform a system restore. Virus killing
under
3. Safe Mode now update speed anti-virus software has been behind the pace of the virus, too easy to your computer will be infected. However, there are many viruses that can be removed from anti-virus under Windows, and anti-virus software cannot run under DOS. At this time we can start the safe mode, Windows system will only load the necessary drivers, so that the virus can be completely removed. Under
4. Safe Mode locking
fact, Windows Group Policy Group Policy is lifted restrictions by loading a specific registry key to achieve, but in safe mode does not load the limit. Press and hold the F8 key after rebooting, in the multi-boot menu window that opens, select "Safe Mode with Command Prompt". After entering the desktop, enter "C:WindowsSystem32XXX.exe (the program you started)" at the command prompt of the startup, start the console, and then remove the restriction according to the above operation. Finally, restart the normal login system to unlock.
System house Note: Group Policy, many restrictions are in safe mode could not be effective, if met could not lift the restrictions, may wish to enter the next to find a solution.
5,
repair system failures If Windows is running up and not very stable or not start, this time do not just reinstall the system, try restarting your computer and switch to safe mode start After restarting the computer, has the system been restored? If the system is faulty due to a problem with the registry, this method is very effective, because Windows can automatically repair the registry problem when it starts in safe mode. After starting Windows successfully in mode, it can usually be started in normal mode (Normal).
6, restore system settings
If the user is installing new software or change some settings, cause the system to not start, also need to enter safe mode to resolve, if it is If the new software is installed, please uninstall the software in safe mode. If some settings are changed, such as the display resolution setting is beyond the display range of the display, resulting in a black screen, you can change it back after entering safe mode. Put a screen saver with a password in the "Startup" menu. If you forget the password, the computer will not operate properly and you can enter the safe mode change.