If you have problems with sound-it is not a bad idea to reinstall sound driver first of all.
"Steam.exe - Bad Image: GameManager32.dll" -maybe Raptr conflict. Just do not install (uncheck) this trash.
1.Try to restore your system to restore point
2.Use sfc /scannow https://support.microsoft.com/en-us/kb/929833
3.Reinstall sound driver
4.Download and install Desktop
or uninstall all AMD software and clean up your system in safe mode Display Driver Uninstaller Download version 126.96.36.199 first
5.Try to disable internet and antivirus software before driver installation.