Completely reset PC as a non-user
2805
What can I do if I forgot my Windows password?
157604
How to reset main user account?
108701
How to completely remove desktop?
43657
How to make a complete factory reset, without anyone being able to retrieve my data?
23509
Remove windows XP after installing Ubuntu
53717
How to Refresh or Reset Windows 8 without the System Reserved partition?
58487
How do I destroy my installation? (render it unbootable?)
28784
How can I lock down ubuntu?
146920
How to completely erase hard drive?
37535
Safest way to remove Ubuntu from dual boot PC
10358
How do I remove Windows but keep Ubuntu?
108152
Restart my graphics card without rebooting?
39249
Reset Windows 10 on new computer to remove bloatware
939
How to reboot into Windows from Ubuntu?
21045
How do I clear everything (data, viruses) from a thumbdrive?
846
How to reinstall Ubuntu keeping my data intact?
157857
How do I boot my PC from GRUB?