Hey ya. Welcome. Let's see what we can do here.
1) Boot to safe mode + networking. Download and run this installer/uninstaller this remove sptd.sys. Do not update while using it as there is a choice:
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2) Navigate to C:\Windows\ and delete this driver:
gdrv gdrv.sys Thu Mar 12 23:22:29 2009
3) Download and run the AVG removal tool while still in safe mode from the sticky link in this section of the forum.
4) Boot to normal mode and update your Realtek lan driver:
Rt64win7 Rt64win7.sys Mon Mar 22 05:57:14 2010
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5) Uninstall Daemon Tools normally. This is why you removed sptd.sys.
PowerISO is an excellent and 100% stable replacement. The disc emulation part of the software is free...