Thank you sir ....it really works
This confirmed the issue was an hardware one, which didn't had anything to do with GSX.
1. it says, it has been disabled by user settings,.. I haven't touch anything
That's because you haven't run the Live Update.
[quite]2. I try to click live update from menus, but it says my windows does not support the application...what?
3. I also click on live FSDT updater icon on desktop, but no luck
i have tried many ways , uninstall and reinstall stand alone addon manager & GSX.[/quote]
I'm sorry but, if you cannot even start the Live Update from the desktop, it clearly show your Windows installation is in a total state of mess, which is not strange, considering you had to do a Checkdisk to fix the bad sectors, and it really fixed some things.
Unfortunately, unless you really know what you are doing, when something like that happens, it's usually easier to reinstall Windows than trying to figure it out how to fix it.