Hi John,
thanks for the reply.
I did some asking to my sons who are the most frequent users of the subject home machine. According to them, the problem started when they tried to install a program that makes the wifi a hotspot in order to share the internet coming from the USB modem.
anyway...
My laptop with Windows 8 works fine until I connect to the internet. This happens everytime. The message is BAD POOL CALLER. How should I resolve this? Please help.
P.S. I have attached the dump file. :(