big network connection issue

Hi,

ive searched the forums but can't find a solution for this problem that works. trying to connect to the internet on my MBP via ethernet i get a "self-assigned IP" and can't connect. I have other computers connecting to the internet fine through my home network so i know the problem does not lie with my ISP. i have tried the following (to no avail) to fix

tried connecting wirelesly

tried using a different ethernet cable... one straight from a computer that could connect fine

reset my router

reset my computer

hard-reset all settings on my router

checked all settings on my router

upgraded router firmware

checked my mac is set to "using DHCP"

tried renewing DHCP lease on my mac

i can't think of what else to do. internet was working fine on my laptop one second, and literally it just completely died the next... i didn't change any settings or anything

my router is a Netgrea DG834Gv2 is anyone is interested

im running leopard 10.5.2

can anyone help?

thanks

carey

Might be a corrupt preference file.
First, throw away a file called NetworkInterfaces.plist, which is located in /Library/Preferences/SystemConfiguration
Then restart your Mac.

tried it - still the same problem

thanks anyway

if ANYONE could offer any more assistance here it would be so appreciated - im stuck!

thanks

carey

careyw said:

tried it - still the same problem

thanks anyway

if ANYONE could offer any more assistance here it would be so appreciated - im stuck!

thanks

carey

Click to expand...

Some things to try.

Boot into Safe mode, then restart normally.
Download Preferential Treatment to look for other corrupt preference files.
Repair permissions and verify disk with Disk Utility. (applications/Utilities)
The Apple Hardware test.

If all else fails, you could do an Archive and Install.