DHCP server could not renew IP address for %computername%

V

Hello,

I have DSL which uses an Actiontec wireless router. For about two
months now one of my machines connecting via wireless will drop it's
connection and the only message I have in the Event Viewer is " DHCP
is unable to renew the IP address for computer name..." I will do a
repair on the connection and then 10 min later the same thing
happens. When connected it shows that the connection is Low,(about
three bars) but it seems pretty fast when surfing. Does anyone have
any idea what could be causing this?

Thanks,
V