Bottom row of a keyboard triggers many keys at once

[TopDeck]

My Acer Aspire laptop´s keyboard acts defectively all of the sudden. The two bottom rows trigger many keys at once. For example pressing d or c types out "dc", pressing g f or v types out "gfv". Any ideas what could be wrong? Cleaning the keyboard night help, but I don't know how to open it up,

Typed out using the on screen keyboard. Model is 8735G.

 

[noidea_77]

Search for the exact model on youtube and you will sure find a video tutorial how to open it and how to replace the keyboard if needed

 

[TopDeck]

Search for the exact model on youtube and you will sure find a video tutorial how to open it and how to replace the keyboard if needed

I got it out and cleaned it. The issue persists. Do you think new keyboard would fix this?

 

[noidea_77]

Search for the exact model on youtube and you will sure find a video tutorial how to open it and how to replace the keyboard if needed

I got it out and cleaned it. The issue persists. Do you think new keyboard would fix this?

Most likely, because the keyboard matrix seems to be broken: http://pcbheaven.com/wikipages/How_Key_Matrices_Works/