Desktop not able to connect to network

brigzilla

brigzilla

brigzilla

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I started having this problem yesterday afternoon, right after i plugged another xbox into my router...

All other devices work fine on my network including wired and wireless, and neither Gigabit port works on my motherboard when plugged directly into the router. I can however bridge a connection from my laptops wireless via a gigabit cable to my desktop, and both gigabit ports work on my desktops motherboard.

I have tried factory resetting my router, Formatting my desktop, manually assigning new IP's, different ports on my router, different ethernet cables and another desktop (which happens to work perfectly). Oh and i have also disabled media discovery in the registry on my desktop.

What im asking is, what is a possible cause of this issue. and in turn what could be done to fix it. It seems like my router doesn't want to assign a working ip to my desktop but i could be mistaken...

any help is very much appreciated
 
brigzilla said:
t seems like my router doesn't want to assign a working ip to my desktop but i could be mistaken...

any help is very much appreciated
Click to expand...


OK start from the beginning....

What OS is the desktop running?
Do you get link lights on the network card when the cable is plugged in?
Have you tried different router ports?
Have you tried different cables?
Does the operating system give you any error messages?
Is DHCP enabled for the NICs or are you runnign static IPs?
If DHCP is enabled for the NICs do you get an valid IP, a 169.254.x.x address or 0.0.0.0?

That'll do for now!
 
PistolPete said:
OK start from the beginning....

What OS is the desktop running?
Do you get link lights on the network card when the cable is plugged in?
Have you tried different router ports?
Have you tried different cables?
Does the operating system give you any error messages?
Is DHCP enabled for the NICs or are you runnign static IPs?
If DHCP is enabled for the NICs do you get an valid IP, a 169.254.x.x address or 0.0.0.0?

That'll do for now!
Click to expand...

windows 7 64 bit
yellow lights on the port when connected to the router. green when connected to the laptop
yes
yes
just that a network cable is unplugged
its enabled but no ip is assigned
 
Right.... If W7 is saying "network cable unplugged" then Windows for some reason can not see the link from the hardware.

I'd be tempted to download fresh drivers for the NIC, remove them from Device Manager and delete the drivers, and reboot and reinstall. It could be something as simple as they become stuck on 1000Mb and you've got a 100Mb router port.
 
just tried what you said

im getting error 651 now. and yes i have tried replacing raspppoe.sys with one from another machine. still no joy.
 
There is something VERY screwy going on there. Unless you have some really odd setup, there is no need to be using raspppoe for a regular LAN connection.

You are not using Microsoft Virtual PC on there by any chance??
 
Forget about IP addressing at the moment since you dont even have layer 2 connectivity. It sounds like a possible auto-negotiation problem to me. Possibly the router has gone bad. Yellow light usually means 10mbps link speed which is obviously wrong. What router is it?
 
tis BT home hub 2.0... all connections to other devices are fine, and i can bridge between devices. but it wont connect directly to my dekstop
 
Buy a cross over cable (£5) connect it to your desktop and another device (laptop, xbox 360 etC) assign static ips to both, can you ping from the desktop and get a reply? yes?

dhcp / router problem

no

driver / ethernet card problem
 
ok ive done that. sent a ping in CMD and it replies so i assume its a software issue? i formatted windows again just be to absolutely sure nothing installed could be affecting it. but to no avail.
 
ok scratch all of what i posted above. i managed to fix it by simply updating my motherboards bios... i didnt think that would affect it, but it seems like it did. thanks for all the suggestions tho folks
 
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