Computer problems....??

[Bushmaster]

Took my computer into the Dr.s last week as it was a little bunged up. Well, he got it running but when I brought it home and plugged it in, it won't connect to the internet. It just keeps saying it can't find the internet connection, doesn't recognise the IP.

I'm running on Xplornet, so its just a matter of plugging in the ethernet cable and it should work . I have no clue where to go from here. I have my work computer at home right now and it works fine on the same cable....

Any ideas from the gurus..

Thanks for any helpful hints !