Hello,
You did not provide much details so it is hard to help you. I will try my best.
I am guessing that you are importing an existing project which assumes bios is installed in C:/ti. But it looks like may it installed in a different directory ..maybe your F drive since I see CCSv5 installed there and usually bios is installed there also.
Check you include search paths and make sure they point to the correct location of your BIOS install:
http://processors.wiki.ti.com/index.php/Include_paths_and_options
Thanks
ki