Microsoft used to have a fairly nice fix it center but they decided to "improve it."
Now instead of one page where you could select you problem, you need to first select the operating system or other information. Worse case, go to Microsoft support and start searching, but seems like a Google search is more productive. Anyway, best we can do are these links:
- Support Windows 10 - http://windows.microsoft.com/en-us/windows-10/support
- Support Windows 8 - http://windows.microsoft.com/en-us/windows/windows-help#windows=windows-8
- Support Windows 7 - http://windows.microsoft.com/en-us/windows/windows-help#windows=windows-7
- Support - all products -
And probably the easiest to find something...