Hi there Zyagonn,
That is really unpleasant.
Mechanical drives are really vulnerable to hits/shocks.
So the drive is not recognized by BIOS and your laptop doesn't boot up right?
My suggestion would be to to attach the drive as a secondary one, to a different working system. That way, in case the drive is not damaged really bad, you can run some data recovery and testing software tools on it.
If the drive is recognized by the other machine, you can try to access it right away in order to back up your data. In case you can't do that, you can try to access it with a data recovery tool:
http/www.tomshardware.co.uk/forum/id-1644496/lost-data-recovery.html
After that, you can test the drive with WD's Data Lifeguard Diagnostic tool and see what is wrong with it:
http/products.wdc.com/support/kb.ashx?id=tckj2w
If none of these tools pick up the drive, then you will need to contact a data recovery company in case the data stored on the drive is extremely important. You can check WD's Data Recovery Partners out:
http/products.wdc.com/support/kb.ashx?id=c1Wtg2
Let me know how this goes,
D_Know_WD