Desktop

Ask something
Discussion Locked

no internet over cat5 cable, ok with usb

0 helpful
9 replies

by mikes

Closed to new repliesThis discussion is closed. It stays readable, but it takes no new replies.

We got hit slightly with lightning the other nite.It blew out my cable modem. I got a new modem, but it will not see my pc over a cat5 cable, but it will see it with a usb cable.I can access the internet and email with the usb cable hooked up to my modem , but not with the cat cable. I have tried 4 new cat cables, a new eithernet card in 3 different pci slots, reformatted and reinstalled windows xp, cleared cmos and resetup.I had my isp provider come out to look at the system also. All to no avail. By the way when my isp came out, he could use his laptop with my cat5 cable and modem and get online.But he could not get my system to work with the cat cable, only with the usb cable.I have checked all my settings and my system recognizes my eithernet card(says it is working properly)and has the right driver, but it gives me a message that a network cable is dissconnected.They are not dissconnected!
I would appreciate any suggestions as I am about to fix this thing with a stick of dynomite!
You can email me direct at:
mikes@ptd.net
or place you answers here.
Thanks in advance,
Mike.

9 replies

by sgt_shultz

wow. make sure your NIC card is locked to 10MB half duplex? not 100MB?. make sure firewall in XP is turned off...and any other firewalls, turn them off for testing...

by mikes

Firewalls are off and card is locked at 10mb half duplex. Any other suggestions out there? HELP!
Mike.

by dsuski

If you have another pc available create a little lan and see if your nic/cat5 combo will work.
Look at the protocol bindings and adapter priorities. It could be that usb takes priority over nic.

by mikes

I set up a lan to no avail. The nic cards check ok but wont communicate. Usb works though.

by thechas

Lightning damage can be a real pain. Like ESD damage from static electricity, the problem may not show up right away, or in the manner you expect.

Take a close look at your old NIC.

If you see any burned or bulged parts, the lightning made it's way through the old modem and zapped the NIC.
When the NIC went, it damaged the PCI bridge on your motherboard.

The fix, is to replace the motherboard.

If there was a modem plugged into the phone line at the time, it may be fried and part ofthe problem.

If you have any other plug-in cards, try removing them and testing the connection before replacing the motherboard.

In my opinion, the lightning got close enough to your PC that I would replace the entire PC, copy the data from the old hard drive onto a new one, and scrap the old PC.

Chas

by mikes

I think you have the right idea. This is the same thought path I have been on. I am going to use the usb route for now, as I have just built this tower 1 week before the lightning hit. Everything else seems to function ok for now, so I will just keep an eye on everything. If the system starts giving me more problems, I my build another new one. Thanks, Mike.

by mogliak

Did you try replacing the NIC ? That may have been damaged during the strike. Any link lights on the NIC when you connect it ?

by mikes

As I stated in my question, I replaced the nic card and both the old and new one look ok (windows says they are working) but the modem will not recognize them.

This discussion is closed to new replies.