No, you are already at the highest build (aside from the RTM build, 7600)
For a last resort, you can clean-install Windows 7 again. If you want to keep your settings, programs etc, do the following:
1.Open Windows Easy transfer, Easy transfer will prompt you...
"What do you want to use to transfer items to your new computer?"
select the option: External hard disk or USB. After that, it will prompt you again. Select: "This is my old computer". Then it will collect settings and it will ask you where to save the file. Save it anywhere you can remember then later...(go to number 2)
2.Copy that file to A USB/CD or upload it to a file hosting site like RapidShare: 1-CLICK Web hosting - Easy Filehosting
3. Do the clean install, then on the clean install Windows 7, open up that easy transfer file that it saved, it will extract the settings from the file, and, hopefully, that should fix the problem.
If you have problems understanding what I wrote, you may reply back to me and ask or, watch a youtube video on how to do it.