Control Keys don't work.

Hey chocoholicgirl,

Thanks for the question. I understand you are experiencing issues with your function keys. The following resource may help to resolve your issue:

Mac OS X: How to change the behavior of function keys

http://support.apple.com/kb/HT3399

If you continue to have issues, try an SMC and NVRAM reset:

Intel-based Macs: Resetting the System Management Controller (SMC)

http://support.apple.com/kb/HT3964

About NVRAM and PRAM

http://support.apple.com/kb/HT1379

Thanks,

Matt M.

I am still having this issue after trying the fixes - they briefly fixed it, but within minutes I've lost the control of my brightness volume, etc. brand new retina MBP with Mavericks.

I have a similar problem. After an upgrade to Mavericks, the function keys no longer work, or they are mapped differently. I have checked settings, and they are all different. My keyboard is pretty old, but it is the wireless aluminium one which seems to correlate to the up-to-date picture on apple -- How to identify keyboard localizations

So, is the answer quite simply my keyboard has been superseded?

You might want to consider starting a new discussion. Since this one is marked solved, less people are likely to look at it. You can link to this one.