Thank you for attending to me.
My operating system is Windows 2000 Professional, initially I downloaded aVast 4.7 Professional and I think I click negative to ActiveX when the screen prompted the message :" An ActiveX control on this page might be unsafe to interact with other parts of the page. Do you want to allow this interaction? " Now even when I see the same prompt message for certain sites and click whichever positive or negative, I cannot change. (Is ActiveX relate to Adobe?)
Or it has to do with previous Norton Internet Security 2005 Antispyware edition. At first, they can co-exist and my computer can get what I wanted as before. But when I uninstalled the Norton via 'Start' button at the bottom of the screen, then 'Set Programs and Defaults', 'Add/Remove Programs' and I did not reboot the computer on its own, but I went to somewhere else to check something before I rebooted manually. Now the 'Set Programs and Defaults' page doesn't work also.
There are Ad-Aware SE Personal Build 1.05, Spy-Guard and Spybot still in my computer, my sister says these can co-exists with aVast antivirus.
This morning I uninstalled aVast 4.7 Professional by using aswClear.exe and installed Home version but the same problems still happen.
When I click the link on a web page, it doesn't bring in the new windows or the page is blank, and the #sign appears at the end of the address.
And even I want to use smiley, change font size, underline, bold for this message also cannot.