All of the attached dumps are D1: DRIVER_IRQL_NOT_LESS_OR_EQUAL bugchecks pointing to the culprit OAfilt.sys which is the Creative WDM Audio Driver (32-bit). I'd recommend uninstalling your Creative audio drivers and reinstalling the latest version here.
It also should be noted that sptd.sys is listed in your loaded drivers list. sptd.sys is the SCSI Pass Through Direct Host - Daemon Tools (known issues with Win7). I cannot see dtsoftbus01.sys in your drivers list (Daemon Tools driver), so was it installed at a previous time? Regardless, uninstall Daemon Tools if it is installed.
Usually, I'd instruct you to run an uninstaller tool to remove sptd.sys from your system, but it appears their site is undergoing a change and the downloads page is no longer available and I cannot seem to cache the previous page to access the download links. So, for the mean time, navigate to C:/Windows/System32/drivers and rename sptd.sys to sptd.old
Doing that should hopefully break the functionality of that driver.