updated mavericks and now my bootcamp windows 7 partition no longer shows up

Hello and thank you in advance for the help!

This problem started when I updated my Mavericks. My start up into the windows side of my computer is normally a bit slow but works never-the-less. After installing the update to 10.9.5 my windows partition first gave a screen where it would ask me to press enter to get into the windows side of the computer but the keyboard did nothing so I restarted the computer. Thereafter, my windows 7 partition no longer shows up when I press option from start up or from system preferences > startup disk. I was able to find the partition on the target disk mode which leads me to believe that the partition is damaged somehow. I have some of my data backed up, but not all of it. What is the best way to make a data recovery and get my windows partition operating again?

I have also tried all the basics like PRAM and starting up from Safe mode but I cannot see the windows partition anywhere except for when I open the target disk mode from my other computer.

Thank you in advance for the speedy replies!