Hi Panais, thank your for your help. sorry I didn't get back to you any sooner. I only manage to have my pc to run memtest few days ago. ATHEROS drivers for Microsoft Windows (Atheros?????)
it is my tp-link usb wireless adapter.
Here is the news,
I followed your instruction to remove the panda and setup the security combination. It helped to reduce the frequency of BSOD, and a notification, 'Display driver
nvlddmkm stopped responding and has successfully recovered' usually popup before it go BSOD.
I ran system check and fixed most of the errors.
and memtest indicated no problem in my rams.
After I google nvlddmkm error, tried several of fixes, it turned out it was the 3d driver which come with the nividia driver package was the source of trouble. This morning, I uninstall the existing driver and have a clean installation without the 3d driver. So far, I am free of any error.
I appreciate your help, thank again.