I have a Lenovo Flex 2 15' that I want to clean up as it is relatively old and slow, so I ttried to reset it to factory settings. However, every time I try to reset it, it aborts with a "There was a problem resetting and your settings hasn't been changed" message(not exactly as I don;t have the system with my right now, but that is what it implies)
How exactly are you trying to reset it? I mean are you following the steps like these below, or some other way?
NOTE: These will only work if you can get into the system. They will not work if you can't even get into Windows.
In Windows versions prior to 10, you should be able to...
1. Go into "Control Panel" and then click "Recovery."
2. Next click "Advanced Recovery Methods."
3. Now click "Return your computer to factory condition."
And in 10...
To do this go to "Start", then "Settings". Next choose "Update & security" and then "Recovery" Here click "Get started" and select the option you wish to use. From here just follow the on-screen instructions to restore Windows 10 back to how it was upon leaving the factory.
Now if these don't work, you may well need a CD/DVD or USB drive with the original OS to restore it.