Abismal Packetloss

[-HDD21-]

Hi all. Im posting about a packetloss problem in DeusEx. (and unreal for that matter).

We had a power outage, and upon power returning went for a game of DX.

50-80% packetloss at all times. Its only on this PC. Its wireless is fine, but with ethernet it does this. Im starting to think a small surge may have trashed the ethernet card (please no, onboard the motherboard).
No other faults have occoured. I dont have a spare ethernet card to try, (an old ISA one, but NO ISA SLOTS HERE!). Voice chatting is also extremely dodgy, assuming because of lost packets. This PC i built myself,not a single problem until today. I do take the following precations:
Surge protectior, Ground fault interrupter outlet (the protecter was like £40 itself), Good quality powersupply, phone line surge protection. (my parents dont know crap about this, i do all this stuff )My server machine is showing no ill effects, and DX works without flaw on it. Narrowing it down. P.S The motherboards warrenty expires in feb. I can replace it, but i dont want to waste time unnecisarily. Also ive tried Clearing CMOS, removing all non essential expansion cards. Any other stuff you suggest i try?
Many thanks.

[Jon]

Did you have the ethernet cable plugged in when you lost power?

[KillerZ]

Make sure it's not the cable itself that is damaged

Try the cable elsewhere

[-HDD21-]

Did you have the ethernet cable plugged in when you lost power?

Yeah i did.

Also i tried the cable on the server machine, it works fine. No problems there

[Fatman]

you could just pick up either a USB to Ethernet Or a PCI to Ethernet card so u dont have to pick up a new motherboard

[-HDD21-]

Yeah ill do that instead. But as MBs under warrenty mightaswell get it replaced. I looked very close, and i see visble charring and scorching. You have to look very closely. its around the ethernet socket. So ill just take the motherboard for a replacement. Many thanks for all the help guys