My top cover has cracked on both lower corners.

http://www.irisvista.com/tech/laptops/toshiba-satellite-p105/take-apart-1.htm

http://www.irisvista.com/tech/laptops/toshiba-satellite-p105/big/toshiba-satellite-p105-17.jpg

Right there. Top of motherboard.

http://www.ebay.com/itm/CMOS-RTC-Battery-Toshiba-Satellite-P105-Series-NEW-/150447093156?pt=US_Motherboard_Components&hash=item23075875a4

RTC Battery.
Real Time Clock Battery. Same as CMOS Battery.


http://www.insidemylaptop.com/my-toshiba-laptop-displays-password-prompt-on-startup/

Regards,
joecoolvette

Just a quick note, before you go replace the entire screen, make sure it's not just a wiring problem. If so, it doesn't cost as much to replace the wires connecting the screen to the laptop. LCD's are much more expensive!
As for replacing the display, this website has information on the display, along with the ability to purchase it from their site. http://www.pelltechnology.com/Toshiba/Laptop/Toshiba-Portables-Satellite-P105-Series-S6024/Toshiba-Satellite-P105-S6024-LCD-Screen-Replacement-P350475.asp
Hope this works!

short answer: yes but it will cost you plenty, as long as your not too picky about looks a bit of electrical tape to cover the crack should do fine. (as would ignoring it).

Sounds like the laptop keyboard went bad and thats why its typing wrong characters. Best way to verify this is to use a USB keyboard on the laptop, if the USB keyboard is typing the correct keys then you know the laptop keyboard is bad. If the USB keyboard is typing the wrong keys as well then you know its a setting in windows that is causing the keys to type wrong characters.

Hi Rabin,
hope you r doing good,
in laptops there are shortcut for num lock button
Hold the Fn (Function key) and scroll lock this will act as a numlock key
to type @ press shift +2

I hope i have answered your question

Thanks and Regards,
MechIntoSoft

This would need a screen replacement

Lots of people do this themselves

Ebay is a good source for laptop parts most of which are NEW

With the replacement screen did you replace the inverter board? Many laptop screens also have a very small fuse built into their power connecttions. Check this also.

Here is just what you ordered. Hope this helps. Just take your time and have patience. Not very hard. Good luck and have a good day.
http://www.irisvista.com/tech/laptops/toshiba-satellite-p105/take-apart-1.htm

You may have your NumLock enabled. That will make you type whatever blue characters are on the keys instead. Press your NumLock (sometimes Num Lk) button and see if that helps.

If that's not the case then you probably have the wrong keyboard profile enabled in Control Panel. (Thinks you are using a foreign keyboard layout of some sort.) If the above solution doesn't wok, open up the Regional and Language Options from Control Panel, select the Languages tab, and press the Details button under the Text services and input languages section. Make sure everything in there applies to you.