I have a g15 computer with the same issues. my keys are "3" "4" "I" "Right-Shift Only" and a couple others.
steps taken to try and correct the issue
1. reboot (Not solved)
2. Uninstalled/Installed latest Drivers (Not Solved)
3. Swapped USB Ports (not solved)
4. Tried Keyboard in different computers/laptops (Keyboard works perfectly fine, just not on my computer
)
5. Updated windows with latest updates (nada)
6. CCleaner, couple others (nada)
6a. Also ran Malwarebytes, lots of other antivirus, trojan, malware programs nothing came up.
7. couple other things like searching the internet, etc all forums tell person to buy new keyboard but i know its not the keyboard cause my sons computer is doing the same thing.
please help if you can. Its driving me nuts. oh btw there is one thing that i can do to get it to work for a little while. if i hold down one of the above mentioned keys for a while (anywhere from 5 to 60 seconds) it will start working...for a short while anyway.