System reserve drive - error - not complete -

trying to run disk optimization - get "system reserved drive - error - not complte"  what is this and how do I fix it?  also, my C drive needs defragging badly, but dont have enough space or Norton is controlling it -  I cant do a auto or manual defrag thru the Windows 7 at all!!  the defrag on Win7 wont even start or give me an error!!

 

HELP ASAP!  my computer is so slow I could be at christmas this year and it still wouldn't be faster by christmas 2014!  thanks for your help.