How to install SharePoint Foundation? Prerequisite installer doesn't work, and claims I don't have Windows Server 2008 R2 SP1 even though I do

I've downloaded both SharePoint Foundation 2013 and SharePoint Foundation 2010 from here and here respectively, as well as SharePoint Foundation 2013 with SP1 here.

When trying to install any of them, I get the error

Setup is unable to proceed due to the following error(s):

This product requires Windows Server 2008 R2 SP1 or above.

So I installed Windows Server 2008 R2 SP1.

However, it still gives me the same error when I try to install.

So I tried Install software prerequisites. Which gave me the error:

There was an error during installation. This tool does not support the current operating system.

This happened on both SharePoint 2013

and SharePoint 2010

So I checked the log file, and it says:

2015-03-16 08:31:37 - Processor architecture is (9)
2015-03-16 08:31:37 - Reading the following string value/name...
2015-03-16 08:31:37 - Common Startup
2015-03-16 08:31:37 - from the following registry location...
2015-03-16 08:31:37 - SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders
2015-03-16 08:31:37 - The value is... 
2015-03-16 08:31:37 - C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup
2015-03-16 08:31:37 - Trying to remove the startup task if there is any.
2015-03-16 08:31:37 - C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\SharePointServerPreparationToolStartup_0FF1CE14-0000-0000-0000-000000000000.cmd
2015-03-16 08:31:37 - Error: Startup task doesn't exist. This is not a continuation after a restart.
2015-03-16 08:31:37 - Locating the following command line arguments file:
2015-03-16 08:31:37 - C:\Program Files (x86)\MSECache\SharePoint2010\PrerequisiteInstaller.Arguments.txt
2015-03-16 08:31:37 - Error: This file does not exist
2015-03-16 08:31:37 - Details of the current operating system: 
2015-03-16 08:31:37 - Major version number of the operating system:  (6)
2015-03-16 08:31:37 - Minor version number of the operating system:  (1)
2015-03-16 08:31:37 - Build number of the operating system:  (0X1DB1=7601)
2015-03-16 08:31:37 - Major version number of the latest Service Pack:  (1)
2015-03-16 08:31:37 - Minor version number of the latest Service Pack:  (0)
2015-03-16 08:31:37 - Platform ID of the operating system:  (2)
2015-03-16 08:31:37 - Product suites available on the operating system:  (0X100=256)
2015-03-16 08:31:37 - Product type of the operating system: VER_NT_WORKSTATION
2015-03-16 08:31:37 - Product type:  (0)
2015-03-16 08:31:37 - OS type:  (3)
2015-03-16 08:31:37 - Error: This tool supports Windows Server version 6.1 and version 6.2
2015-03-16 08:31:37 - Configuring the application's property sheet...
2015-03-16 08:31:37 - Cannot retry

It says Error: This tool supports Windows Server version 6 and version 6.1 before closing. So I checked what version I have.

And it's version 6.1...

And I'm out of ideas. How do I install SharePoint Foundation? I'm on Windows 7 Enterprise, with Server Version 6.1 (Build 7601: SP1).