my idiot sister spilled sprite on my laptops keyboard... everything seems to be working fine, except for the left ALT key. When i press that, the screen flickers and, if i am entering text, a bunch of random numbers show up. Is there any way to clean this without completely dismantling the keyboard? Since only one key isn't working, i don't really wanna take off the whole thing... The broken key is extremely important, so i need it fixed... Thanks

The sprite caused a short on the contact for that key. You will need to remove the keyboard (at least) to clean it. I recommend an authorized repair shop.