Thanks Ken and Reventon for covering the question 2 for me
I want to mention again that:
If you need alternative program to use after uninstalling Deamon tool, I will 100% sure you can use MagicDisc, It doesn't have sptd.sys, -->no BSODs, I gurantee, and it's free too
1. Just wondered, what does that "sptd.sys" do, that I don't need it? Why did I had it before?
Basically, sptd.sys belongs to Virtual Cd program such as Deamon tool or Alcohol 120%. If we see sptd.sys exist, we know you have Deamon tool or Alcohol 120%. Remove the Deamon tool doesn't mean that you get rid of sptd.sys. To remove sptd.sys completely out of your system, you need to use the tool that we provide