Solved: Laptop can't connect

[jieyu4]

I have LAN set up at home where there is one Desktop PC and my laptop. They both have an ethernet cable connected to them. The computer, which is where i'm typing from, works fine; but the laptop cannot connect to the internet. The little icons on the side with the computers says "local area connection connected," but the only thing that it let's me do is share files with this computer.
Help plz T.T

edit: by the way, both of them worked three days ago, and i don't remember changing anything on it. and the day before it stopped working both computers couldn't get online for like 5 hrs

 

[JohnWill]

Can you tell us how they're connected? Do you have a broadband router? Broadband modem? Make/model of either or both of these? Is the cable connected between the two machines, or to some other box?

 

[jieyu4]

uh i think it's a broadband modem, Motorola SB5120 Cable Modem, then there is a wire that connects to a router, TEW-432-BRP, then that two wires, one that goes to the computer the other goes to the laptop

 

[JohnWill]

What version/patch level of Windows are you running on the laptop?

OK, on the desktop and the laptop, let's see the result of this:

Start, Run, CMD to open a command prompt:

Type the following command:

IPCONFIG /ALL

Right click in the command window and choose Select All, then hit Enter.
Paste the results in a message here.

 

[jieyu4]

Microsoft Windows XP [Version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.

C:\Documents and Settings\Elia>ipconfig /all

Windows IP Configuration

Host Name . . . . . . . . . . . . : home-2f463c9235
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Unknown
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : had1.or.comcast.net.

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . : had1.or.comcast.net.
Description . . . . . . . . . . . : Realtek RTL8139/810x Family Fast Eth
ernet NIC
Physical Address. . . . . . . . . : 00-16-36-69-1B-34
Dhcp Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IP Address. . . . . . . . . . . . : 192.168.1.100
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.1.1
DHCP Server . . . . . . . . . . . : 192.168.1.1
DNS Servers . . . . . . . . . . . : 192.168.1.1
Lease Obtained. . . . . . . . . . : 2007年1月17日 下午 02:34:49
Lease Expires . . . . . . . . . . : 2007年1月17日 下午 03:34:49

C:\Documents and Settings\Elia>

 

[JohnWill]

Which machine is this, the working or non-working one?

 

[jieyu4]

Which machine is this, the working or non-working one?

the non-working one, should i also do one for the working one?

 

[TerryNet]

You probably don't need to do the working one. Please try the following; depending on the results JohnWill may have the solution in his next post.

Open a command prompt window as above and

1. On the PC open a Command window and type
ping 192.168.1.1

Do you get Replies, or do you get packets lost?

IF you got replies,
2. ping 66.94.234.13 (or any other internet address you know)

Do you get Replies, or do you get packets lost?

If you got replies,
3. ping www.yahoo.com (or any other internet name)

Do you get Replies, or do you get packets lost?

 

[jieyu4]

ping 192.168.1.1 -- packets: sent=4, recieved=0, lost=4 (100% loss)


i'm guessing that's a packet lost

 

[TerryNet]

Yeah, that's packets lost OK. Sure didn't expect that! Your ipconfig /all looks real good except for the question marks in the lease dates.

Getting a good IP configuration from the router but failing to ping it could mean a partially bad cable or a firewall problem.

But, but, you're able to file share??? I'm confused; where are you John?

Try pinging each computer from the other. Your above ipconfig shows that the bad computer has IP 192.168.1.100. So from the good computer ping 192.168.1.100.

Use ipconfig to find the good computer's address and ping it from the bad computer.

Oh, and if the good computer's IP is not 192.168.1.x, then show us the ipconfig /all please.

 

[jieyu4]

they both say packets lost

and the question marks on the lease dates is probably because it's some chinese characters

 

[TerryNet]

You can't ping in either direction, and you can't ping the router from one computer, but you can file share????

I'd suggest concentrating on the "bad" computer--it has a firewall blocking (some) access or the cable is bad or the port on the router is bad. If you have or had a 3rd party firewall on that machine, that is the likely cause. Uninstall it. If you have already uninstalled it, probably a piece was left behind. Go to the supplier's web site and see if they have some tricks or tools to completely uninstall it.

Try a different cable. Try a different router port. Hope that JohnWill spots the problem.

 

[jieyu4]

i have tried switching the ports and cables but that didn't help and as for the firewall i got no clue if it's a 3rd party's because i don't ussually try to fix my own computer

 

[JohnWill]

I'm totally confused. I think maybe a HijackThis log so we can see what is running might be a good idea.

 

[jieyu4]

umm now the laptop won't even get shared files from the computer, but it still says that it's connected


but the computer can still get stuff from the laptop O.O