Which service provider are you using ? If it's Starhub, do you
have the following checked ?
- Secure your wireless network via the router's software
- Assigned your desktop & laptop individual IP address
- Ensures your networks are set as secured
If you need assistance and you're using Linksys Router, call them
up at 63893528 and seek assistance for IP conflict. After set-up is
done, such problems are minimised to the lowest.