For about a week now my main PC has been unreliable. It was upgraded to Windows 10 without any issues months ago, but it has been problematic recently and says it is now missing a file and won't boot. I recently did a defrag. Although this is a well used machine, and this may be coincidence, I seem to have had issues since the BIG Windows 10 update which took 1.5 hours to install.
Am I alone? Is this my PC or a more general issue? Incidentally the PC in question is a Dell Inspiron i5 with 1TB hard drive.