Dropping internet connection

[BlackArt]

I've ot this problem recently...

During browsing internet the Local Network Connection
starts dropping. I have a PC with Wibdows XP SP2
installed. Cable Internet (OptimumOnline) via D-Link DI-
604. From times to times get the pop-up saying Local Area
Network Cable is unplugged. Then almost immediately
connection restores. The Event Viewer says

"Your computer was not able to renew its address from the
network (from the DHCP Server) for the Network Card with
network address xxxxxxxxxxxx. The following error
occurred:
The semaphore timeout period has expired. . Your computer
will continue to try and obtain an address on its own
from the network address (DHCP) server." (DHCP ID 1003)

and:

"our computer has automatically configured the IP address
for the Network Card with network address xxxxxxxxxxxx.
The IP address being used is xxx.xxx.xxx.xxx."

Here is ipconfig:

Windows IP Configuration
Host Name . . . . . . . . . . . . : BLACKART
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Unknown
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No

Ethernet adapter Local Area Connection:
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Realtek
RTL8139/810x Family Fast Ethernet NIC
Physical Address. . . . . . . . . : xx-xx-xx-xx-
xx-xx
Dhcp Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IP Address. . . . . . . . . . . . : 192.168.0.100
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.0.1
DHCP Server . . . . . . . . . . . : 192.168.0.1
DNS Servers . . . . . . . . . . . : 192.168.0.1
Lease Obtained. . . . . . . . . . : Saturday,
August 28, 2004 1:35:16 AM
Lease Expires . . . . . . . . . . : Saturday,
September 04, 2004 1:35:16 AM

HELP PLEASE!!!

 

[Richard G. Harper]

These two messages are both caused by a loss of connectivity between the
computer and your network device. This could be a bad cable, bad network
card, or problem with the router.

 

[Guest]

How can I check which one causes this?

 

[Richard G. Harper]

Start with the simple and work your way up. Try a different cable. See if
your network adapter manufacturer has a test program to test the network
card. Test the card by substitution if not. Try changing ports at the
switch/router to see if that helps.