There is another device on your network that has the same
IP address of another device.
This probably happened because one of the devices got an
IP address using DHCP or some automatic IP management
system, then you added another device that didn't use DHCP
(i.e. it had a default IP, or you gave it one) and it got
the same IP as the first device.
When you logon to your computer:
1) Go to START/RUN
2) Type in cmd (if you are using NT/2000/XP) or Command
(if you are using ME/98/95) and press enter
3)
a)if you are using NT/2000/XP,
type in: ipconfig /release
then type in: ipconfig /renew
b) if you are using ME/98/95,
type in: winipconfig
A program should start and you should have the option to
release/renew your IP address.