Can't open .msi files

[Needshelp]

I can't open up .msi files because there is no windows installer or something. I can't install anything. Thanks for your feedback in advance.

 

 

Operating system:Windows 7 Home Premium (64 bit) Service Pack 1

System root: C:\windows

Available physical memory: 2663 MB

CPU: AMD C-50 Processor

Drive Info:

C: 284.40 GB

Internet Explorer: 10.0

[WiseCleaner]

1, Download and install Windows Installer http://www.microsoft.com/en-us/download/details.aspx?id=8483

2, Open Control Panel---System and Security----Administrative Tools---Services, find out Windows Installer, double click it, change its Startup type to Automatic, click Start to run this service.

3, Install your *.msi file. If you still cannot do it, reboot system, then try again.