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It sounds like the screen broke when it fell. You'd need to get the screen repaired. Your best bet is to have someone else do it for you. Search for computer repair in your area. Sometimes places that repair broken cell phone screens can also repair laptop screens.
It is definitely possible you have a damaged screen component. At this point I would recommend taking it to a service center or call them and have it shipped for repair. You may even have a local computer repair shop that could help you out and maybe save some money :)
The problem has been narrowed down by connecting it to the TV. We know the laptop works fine otherwise except for the screen.
The way to find out if it's just the screen is to connect the laptop to an external monitor. Pay attention to the F keys when you connect the laptop. On most Toshibas, you'll see a small depiction on the F5 key of a laptop next to a monitor. You either have to press that key alone, or hold down the fn key and then press the F5 key and let go to transfer the signal to the external monitor.
If the external monitor shows up good and you can perform all other functions on your laptop while viewing the monitor, you need only replace the laptop LCD. If it does not display correctly, then you're into the next round of troubleshooting.
It sounds like the data cable that connects the motherboard to the back of the lcd panel has come loose or has broken. The keyboard and lecd bezel will have to be removed to check it. Check the link below for a guide to the laptop maintenance.
If the fan fell directly on top of it then it could have destroyed your lcd display. Power down the laptop completely, plug external monitor into vga port on laptop, power on laptop. If you have video on the monitor then you would likely need to replace the screen. If you send it in to get fixed it will cost a lot of money. You could do it yourself if you are comfortable with that type of thing.
You may have to put the laptop in presenter mode, which tells it to use the attached monitor. There is supposed to be a key on the laptop which does this, its normally the FN key with CRT/LCD (F8). You can also do it via screen properties but since your screen is broke u'll have to use the key shortcut.
If that doesn't work, then your video card may be bad and you'll have to change it.
when switching on te laptop, does it make noises, does the fan run, the CD/DVD-drive LED shows green light and the harddisk rattle little bit? - good for you if it does, as the system still boots up !
to check if the LCD screen is broke and not the graphics card malfunctioning:
hook it up to an external monitor (one usually used with desktop PCs) when laptop is switched off, using the 3-pin input in the back or to the right side of your laptop, and make sure the external monitor's power cord is properly fused...
Now switch on the external monitor first and then your machine again, and wait for the laptop boot messages on the monitor! see anything? if yes the laptop screen is broke and needs to be replaced. If still the external monitor stays black the onboard graphics card is up in smoke and you're in big trouble then.