Topic: driver_hdsp_win_421.zip

Prior to attempting to install drivers, I uninstalled driver hdsp win 421 from Programs and Features and also from Sounds, Video and Game Controller.  For some reason when I attempted to install driver only part of the install was complete, ASIO, and Totalmix did not install nor (hammer) icon.  Again, I uninstalled driver and attempted to install same problem, driver only partially completed.
I'm using windows 8.1 64bit, Dell T3400 Quad 2.4 GHZ and Multiface and PCI card.  It worked perfect until I installed AVG antivirus that's when I notice that when you clicked on Totalmix or the hammer, nothing happened.
Any help would be appreciated.