Do you know how to recover your Asus A550C system？

ASUS A550C 14.4V 3070mAh laptop battery

Under Advanced options, you can use System Image Recovery to recover your system using your Asus A550C's original image file.To access this during POST:

Restart your Asus A550C then press F9 during POST
Wait for Windows® to load the Choose an optionscreen then tap Troubleshoot.
Tap Advanced options
In the Advanced options screen, select System Image Recovery.
Choose an account you would like to recover usinga system image file.
Type your account password then tap Continue.
Select Use the latest available system image(recommended), then tap Next. You can also choose Select a system image if your system image is in an external device or DVD.
Follow the succeeding steps to complete thesystem image recovery procedure.
NOTE: We strongly recommend that you regularly backup your system to prevent data loss in case your Asus A550C stops working.