I just recd. Optimus Maximus keyboard that worked for one day. The next day, I find that half of the primary keys do not light up. Has anyone experienced this problem, and what was the solution. I also tried replacing one of the non lighting keys with a replacement key but this did not work. Thanks in advance.

Moved to appropriate section of forum.

When you power up your keyboard without the usb plugged in do the same keys work or not? I have heard of a similar case but I can't find it at the moment. I'll keep looking!

I also assume that the key action still works when you press the dead keys.

Some key in that block are inserted upside down. Please, check it or contact support with more detailed photo.