My Laptop's Keyboard is not working properly..PLZ HELP ME

[Tushar Dongre]

I have a Sony Vaio F1521k laptop.
and basically i'm facing problems with my ARROW keys and BACKSPACE key.
1) its like my DOWN ARROW key is always pressed on...when i open any page ,it keeps rolling down.
2) sometimes BACKSPACE key stops working
3) when i type something and wants to edit something in between the line,then suddenly my RIGHT ARROW key jumps to right side,making me impossible to edit(so i have to delete everything and type it again correctly
4) also ,sometimes DELETE button doesn't work
5) now i have just noticed that my LSHIFT is not working (while using special characters)

****

for a while i thought it must be the ARROW key that is causing problem so i stopped them all from functioning and assigned new keys to use the same function(using SHARPKEYS)
but the same thing was happening again(like NEWLY assigned RIGHT ARROW KEY was jumping again).

i have tried many things.

tons of times uninstalled keyboard driver from device manager,tried updating it with latest software.

also i found one solution to this problem that i have to keep pressing DOWN ARROW key(Original Or Newly Assigned One) for few seconds to let everything work again

but i'm unable to solve this problem.

PLZ HELP ME...

 

[Warukyure]

Have you tried taking it in to get the keyboard replaced? Keyboards for laptop to get replaced aren't that expensive.

 

[Tushar Dongre]

Have you tried taking it in to get the keyboard replaced? Keyboards for laptop to get replaced aren't that expensive.

the thing is i'm not so sure whether its a software problem or hardware one...
also when i asked about keyboard's price they said it will be around 150$(in the sony care)...n thats pretty expensive stuff...

but the problem seems related to the software...

 

[prevolution2]

Is there any stuff stuck under the keys?

 

[Gage Calhoun]

This happened to me too, then the connector for it on the motherboard fried entirely. I would definitely see a professional before it gets out of hand