Visual Studio Community 2015 Fatal Error

I've tried:

• uninstalling VS 2015 redistributables
• both the web installer and the ISO
• Deleting everything in %temp%
• Uninstalling the failed installs and deleting their folders
• Restarting a dozen times
• Already have all windows 7 updates

The error log:

[0D24:07E0][2016-06-09T23:57:04]i301: Applying execute package: vs_devenvLP, action: Install, path: C:\ProgramData\Package Cache\{173D2989-6B09-3A90-8819-A53E43F99818}v14.0.23107\packages\vs_devenvLP\vs_devenvLP.msi, arguments: ' MSIFASTINSTALL="7" VSEXTUI="1"'
[1380:0C44][2016-06-09T23:57:05]i000: MUX:  ExecuteError: Package (vs_devenvLP) failed: Error Message Id: 2902 ErrorMessage: The installer has encountered an unexpected error installing this package. This may indicate a problem with this package. The error code is 2902. 
[0D24:07E0][2016-06-09T23:57:05]e000: Error 0x80070643: Failed to install MSI package.
[0D24:07E0][2016-06-09T23:57:05]e000: Error 0x80070643: Failed to execute MSI package.
[1380:0C44][2016-06-09T23:57:05]e000: Error 0x80070643: Failed to configure per-machine MSI package.
[1380:0C44][2016-06-09T23:57:05]i000: MUX:  Installation size in bytes for package: vs_devenvLP MaxAppDrive: 0  MaxSysDrive: 413696  AppDrive: 0  SysDrive: 131072
[1380:0C44][2016-06-09T23:57:05]i000: MUX:  Return Code:0x80070643 Msi Messages:The installer has encountered an unexpected error installing this package. This may indicate a problem with this package. The error code is 2902.  Result Detail:0 Restart:None
[1380:0C44][2016-06-09T23:57:05]i000: MUX:  Set Result: Return Code=-2147023293 (0x80070643), Error Message=The installer has encountered an unexpected error installing this package. This may indicate a problem with this package. The error code is 2902. , Result Detail=, Vital=True, Package Action=Install, Package Id=vs_devenvLP
[1380:0C44][2016-06-09T23:57:05]i000: Setting string variable 'BundleResult' to value '1603'
[1380:0C44][2016-06-09T23:57:05]i319: Applied execute package: vs_devenvLP, result: 0x80070643, restart: None
[1380:0C44][2016-06-09T23:57:05]e000: Error 0x80070643: Failed to execute MSI package.
[1380:0C44][2016-06-09T23:57:05]i000: MUX:  ExecutePackageBegin PackageId: vs_devenvLP

Any ideas or solutions are welcome.

The most of the time it means that your package was corrupted.

You should verify you have corrupted package or not. Please use FCIV.exe http://support.microsoft.com/kb/841290 to verify hash of ISO. Any discrepancy would indicate that the file was corrupted.

The SHA-1 value for VS community is "BAAD3CEBAB7A5834D8F78F7D02E4880C010F3BA9".

If your SHA-1 value is incorrupted, it means that your package is corrupted, you should re-download and reinstall it. E.g. from here: http://download.microsoft.com/download/0/B/C/0BC321A4-013F-479C-84E6-4A2F90B11269/vs2015.com_enu.iso

Or if you don't want to take any steps you just need to reinstall Windows. It will help.