Hi TCO,
Uninstall all your spyware etc and reload (Reccomended)1st.
There is a security feature in Windows called (DEP) for short.
If re-installing does not fix the problem then try this:

1. Go to Control Panel and choose System.

2. Switch to Advanced tab

3.Click the Settings button in the Performance section.

4.Select the Data Execution Prevention tab and select this option:

Turn on DEP for all programs and services except those I select.

5. Click Add.

6. Select the program that would not launch and click Open.

Windows will display a warning message, so click OK to this.

7. lick OK to confirm your changes.

DEP will now allow this program to run. Just repeat the above for all the other progs. If this does not work on your first program then go through the steps again and select the program and click remove.
If all your protection programs are in the same folder you may get these sort of problems.

Try downloading AVG and reinstalling.
Cheers