After installing the system, install all the pre-installed management software. However, at this point, if you still can't see the Acer eRecovery option in Acer eManager, insert the original Acer driver CD into the optical drive. In the "patch" directory of the CD, there is a program called ERY.exe, which is the Acer one-key recovery software. After extracting and installing it, restart your computer. Finally, you will see it in Acer eManager.