Log-in buttons don't work

[RaldoMcdaldo]

The buttons in my char. select screen depress when I click them with the mouse but don't stay clicked in and therefore nothing happens. Has anyone else had this problem? I've played flawlessly for a few months now and never had one problem until today. Any advice as to what i should try would be greatly appreciated because there is nothing on the general internet that even comes close to this problem.