See refresh your pc from the, Refresh your pc from the recovery backup – Acer Aspire S3-392 User Manual
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a. Just remove my files quickly erases all files before restoring
your computer and takes about 30 minutes.
b. Fully clean the drive completely cleans the drive after each file is
erased, so no files can be viewed after the recovery. Cleaning the
drive takes much longer, up to 5 hours, but is much more secure
as old files are completely removed.
6. Click Reset.
7. After the recovery has finished, you can start using your computer
by repeating the first-start process.
Refresh your PC from the recovery backup
1. The Refresh your PC window opens.
2. Click Next.
3. Select the operating system to recover (normally only one option is
available).
4. Click Refresh.
5. The recovery process begins by restarting your computer, then
continues by copying files to your hard drive. This process takes
about 30 minutes.