LG Gram 14Z90N-V Easy Manual page 180

180
Restoring the System
3
Check the current settings and click [Next] to perform the recovery according to the instructions.
TIP
If you need to change the settings, click [Change settings] and change the settings.
Remove everythings
Removes all items from the system and restores the system to its initial pre-purchase state.
CAUTION
All data is lost during the initialization, so you must backup all critical data in advance.
It may take about 5 hours or longer depending on the system conditions.