|Recycling the power on your router is a good first troubleshooting step. It's been my experieince SOHO level equipment's wireless can "loose it's marbles" and stop functioning correctly and recyclcing the power will fix this. |
However, if the problem persists, I highly recommend ensuring you have the most up-to-date firmware for the unit. If you do already, or the newest doesn't fix the issue, try updating the drivers on the laptop. If that still doesn't fix the issue you can try resetting the router to factory defaults and then reconfiguring. If the problem still persists, it's likely your router is dieing and it may be necessary to replace the router.
NOTE: if this only happens to the one wireless client, then the issue is the client. If it happens to all wireless clients, then it follows logically it must be the router.
It matters not how straight the gate,
How charged with punishments the scroll,
I am the master of my fate;
I am the captain of my soul.