Dropped tv on Toshiba A205 laptop. Hard drive is

hard drive is knacked so might touchpad sensor be both avail cheaply on ebay/amazon

Your hard drive is no longer able to spin up freely .The heads have crashed.Replace the hard drive.

The reason why the laptop does not boot up because the hard drive is most likelt faulty especially when it makes a clicking noise.
First thing to try is to re-seat the hard drive and boot up the Toshiba, and go into the BIOS configuration and see if the BIOS detects the hard drive, if the BIOS does not detect the hard drive and when you boot up the laptop again and it still makes a clicking sound then the hard drive is definitely faulty and the data on your hard drive is lost.

If you are desperate to recover the data on your faulty hard drive, there companies that can recover data from faulty hard drives BUT it will cost you an arm and a leg for their services.

To get the laptop working again, you need to replace the hard drive install Windows and the device drivers for the hardware devices that are part of your laptop and your programs.