While it is always good to scan for viruses and spyware (typically you need to use different programs for each), there is some basic troubleshooting you can do as well.
1. How are you getting to the Internet
2. How are you sharing that Internet connection.
3. Can you ping the IP address of whatever is sharing the connection.
4. Can you ping an external IP address
5. Can you ping an external name.
1. How are you getting to the Internet
2. How are you sharing that Internet connection.
3. Can you ping the IP address of whatever is sharing the connection.
4. Can you ping an external IP address
5. Can you ping an external name.