I shut down and kept for more than one hour, but it still could not find connection.
I kept it for three days to make sure. Still it did not connect. So, I decided to go to computer center to check. The laptop repair technician told me that my wireless was broken. He recommended to use wireless prolink; it was cheaper.
After I put it, I could share hotspot to my laptop.
Nowadays is era of technology. We have to up to date. Me too. I try to follow up digital and technology production. I am low tech, and I don't have basis in IT or technology; however, I have to improve myself in order to survive in on the earth.