I have installed Belkin_N_wireless a8969d onto my pc. I have a work laptop that has a wireless router? already in it. however, when it tries to locate the belkin n it brings up an error message saying ' windows was unable to find a certificate to log you onto the network Belkin_N_Wireless A8969D' I just can't figure what I need to do to enable this to work. please can you help me? Thanks Ceri

HI,
I see you set Windows back to defaults as you mentioned and now your Router will not go Wireless.
First Restoring Windows Back to Factory Defaults will not reset your Routers Settings to Defaults together with Windows.
So Most Probably the issue is since you restored windows back to factory defaults you may need to install the Wireless Driver again on the Machine / Computer to make your computers wireless card work again and be able to detect and connect to your Belkin Router.
try a difefernt device that can connect wireless to your Router or maybe a different Laptop to see if the Belkin is working fine wireless.
If any other Laptop will not detect the Belkin then try turning the Wireless Radio ON again in the Router Settings of Belkin.
But I suggest to check all your system drivers if installed for it to be wireless capable again on the issue, Restoring Windows back to Default will not change anything in the Belkin Router. I believe this is a Driver issue on the Wireless card of your Computer.
You mentioned the system does work if plugged in Wired right, check your drivers install every driver that needs to be installed from the Manufacturer Website of your Computer for proper and compatible drivers.
Have a nice day.

There is a great article at Working with Windows Wireless Networks
If you need more help post back! Thumbs and testimonial are welcome!

Ring up the service provider. I have a belkin server and I had the same problem.
You should have a phone number with your server in the box it came in. If not go onto http://en-us-support.belkin.com/app/answers/detail/a_id/508
This should give you a local free number and from there they will give you free support on how to connect.

Hope I helped Dr Reed

If this is the only computer that you are trying to connect then you will need to set up the router from the start.
If the router is already working and there are one or more computer online already then you just need to connect to the network on the laptop.
Is it a wireless laptop or it will be connected to the router with the cable ?

If it is wireless then you will need to connect to the wireless network.

Click Here for step by step instruction

If you do not have an 'N' compatible wireless adapter in your laptop, make sure you set the Belkin to 'B/G' compatability mode. Also, the type of security if an older laptop is probably limmited to WPA-PSK, and you would need to set that up in the router as well. Extremely old laptop wireless adapters may be limmited to WEP, which is an old an unreliable security encryption.

if you have not changed any settings from belkin router, access the wireless configuration on your windows machine and search for the belkin ssid then hit on connect

Purchase a wireless adapter for your apple laptop and connect to your wireless network using the same settings as the PC.

You may want to check if the wireless switch is "ON"
on the laptop most wireless ready laptops has either a
button or toggle switch to enable the wireless radio..
if it's already enabled and you still cant connect to
the wireless network,try changing the wireless channel
from the router.

Normally, connect pc with router, and modem off. Turn on the desktop and then turn on the modem and router. letting the modem and router assign ip addresses to all connected devices.

Hi,
Try the manual method.connect router to pc with ethernet cable
1.logon to 192.168.0.1
2.Connection type ; PPPOE
3.type in your username@ISp and pass
4.Save settings
5.Configure wireless setting(SSID,Wep)
Configure pc with the same SSID and WEP
uplug the ethernet cable and check if your are able t connect wireless

if you still have issue use this guide

Cheers !!!