I have a Acer Aspire 5950G, I got the same issue before I loose the "right CRTL", now its permanently not working. After a few months 1,3,q,t,u,p,-,j,num 5 are not working... but this is random, sometimes it works, sometimes not. I want to try the cmos clearing procedures. But I done know if we have the same location of CMOS pins.
here's my laptop.. 
