No Keyboard/Mouse Response after Windows 8 Update

I bought a Sony Vaio E-Series SVE17812BCXB running Windows 8. After the last major windows update that occurred in Feburary '13, the keyboard/mouse stop responding once the fully loaded splash screen is presented (With the time and date, ect). I know the keyboard and mouse are fully functioning as I can use them when I access the boot menu before the OS is loaded. Also, only the keyboard...