Reinstall msi installer

Method 2: Reinstall the Windows Installer
loadTOCNode(2, 'resolution');
To reinstall the Windows Installer, rename the damaged Windows Installer files, and then reinstall the Windows Installer. To do this, follow these steps:
1.
Click Start, click Run, type cmd in the Open text box, and then click OK.
2.
Type cd %windir%\system32, and then press ENTER.
3.
Type attrib -r -s -h dllcache, and then press ENTER.
4.
Type ren msi.dll msi.old, and then press ENTER.
5.
Type ren msiexec.exe msiexec.old, and then press ENTER.
6.
Type ren msihnd.dll msihnd.old, and then press ENTER.
7.
Type exit, and then press ENTER.
8.
At the command prompt, type exit, and then press ENTER.
9.
Click Start, and then click Turn off computer or Shut Down.
10.
Select the Restart option, and then click OK, or click Restart.
11.
Log on to the computer.
12.
Download and install the latest version of the Windows Installer. For more information about how to obtain the Windows Installer, click the following article number to view the article in the Microsoft Knowledge Base:
893803 (http://support.microsoft.com/kb/893803/) Windows Installer 3.1 v2 (3.1.4000.2435) is available
13.
Click Start, and then click Turn off computer or Shut Down.
14.
Select the Restart option, and then click OK, or click Restart.