Asus 13.3 in touch screen lap top

i have a Asus 13.3 in touch screen laptop windows 8. I have had it for a few months now. I went to use it today and noticed the volume would not work. It is all the way up in the setting on my computer and the control on my screen help please! :D

Tech Support Guy System Info Utility version 1.0.0.2
OS Version: Microsoft Windows 8.1, 64 bit
Processor: Intel(R) Core(TM) i3-4030U CPU @ 1.90GHz, Intel64 Family 6 Model 69 Stepping 1
Processor Count: 4
RAM: 6027 Mb
Graphics Card: Intel(R) HD Graphics Family, -1984 Mb
Hard Drives: C: Total - 455320 MB, Free - 417444 MB;
Motherboard: ASUSTeK COMPUTER INC., Q302LA
Antivirus: Webroot SecureAnywhere, Updated and Enabled