I've run the SFC and this has listed the following files as 'Cannot repair':
tcpmon.ini of Microsoft-Windows-Printing-StandardPortMonitor-TCPMonINI settings.ini of Microsoft-Windows-Sidebar
What are these files?
I have no problems printing when the PC is running and the Windows Sidebar is currently closed on my desktop, so I'm confused as to whether or not the problems with these files are responsible for the PC freezing or not booting up?