Thank you. The hard disk drive (HDD) model is showing, but it could be damaged from the drop and/or it may just be loose. Please try the followings:
- Remove the power cord, and the battery at the back of the laptop:
, then remove the cover at the bottom of the laptop:
, then remove the hard drive:
, then re-connect the hard drive securely
, then replace the cover, and reinstall the battery
, then turn it back on and check.
- If needed, you can watch the instruction video at the website below for how to remove the hard drive:
; see starting at the minute 1:06 to 1:48.
Please let me know. Thank you.