How To Boot Into Safe Mode via CMD
Safe Mode:
bcdedit /set {default} safeboot minimal
Safe Mode with Networking:
bcdedit /set {default} safeboot network
Safe Mode with Command Prompt:
bcdedit /set {default} safeboot minimal
bcdedit /set {default} safebootalternateshell yes
Note: This will set the default to always be safe mode, so to undo that:
bcdedit /deletevalue {default} safeboot
How to Boot Into the Advanced Menu (8/8.1)
This can be accomplished any of the following ways:
- Hold Shift + Click Restart (almost as if you were restarting the normal way)
- WIN + i, click "Change PC Settings" > Update & Recovery > Recovery > Advanced Startup > Restart Now
- cmd:
shutdown /r /o /t 0
Item 3 summarized:
/r = This option will shut down and then restart the local computer or
the remote computer specified in /m.
/o = Use this shutdown switch to end the current Windows session and
open the Advanced Boot Options menu. This option must be used with /r.
The /o switch is new beginning in Windows 8.
Edit
Since you changed your parameters:
- Try to recall if you had auto login on or off.
- Plug in head phones/speakers
- Boot your computer
- Wait a while
- If auto log-in, skip this step. Else: login - listen for the audible queues and wait a bit.
- Type WIN + R
- Very carfully type one of the desired commands.
- Hit ENTER, wait, and hope it works.
Otherwise, just get a linux disc and an external drive (or use GDrive/dropbox/whatever) to back up important data. Then reformat.