Install a driver for your network adapter

[GSquadron]

I don't know how to enter changes to the router (it is oxygen gennet)
I type in 192.168.254.1 and nothing happens as subscribed on the manual.
I type in oxygen.lan again same thing.
Is there a way i can access the wireless router? It is 2.4 GHz
I remember the technicians entering the menu but i dont know how to access in.
Am not a network guy :[

 

[Rhyseh]

Okay I will need a bit more detail about the problem first as I am still a little confused as to what the issue is. From what I can gather the problem seems to be this:

When you connect your Desktop PC to the wired, ethernet network using a cat5/e/6 cable your network adapter does not register there as being any connection. In addition to this when you try and connect using a wireless USB modem (that has been working on a laptop) this also does not give you a connection.

You stated there is a red cross on the network adapter, however you didn't tell us where this red cross was. Is it in device manager or is it in the network adapter control panel interface?

What operating system are you running on this machine?

Is your wireless access point also acting a switch (i.e. are you connecting your machine to the same device that provides wireless access)?

You said this problem started happening a few days ago when you had a power outage?

I am assuming alot of information about a fair few of these points, however I think it would be worth resetting your TCP/IP protocols. To do this launch command prompt and run the following command:

netsh int ip reset

 

[GSquadron]

Ok, first of all, i have to change something on your post. When i insert the wireless usb, there are identified all connections, but i cannot access my own connection in my home. The red cross is in the ethernet networks on the left of the clock. There is no red cross when i put the wireless usb.
The OS is windows 7 64bit ultimate. I am connecting my machine to the same wireless access that the laptop is.
Last but not least, i tried your command on run and nothing happened. Still the same.
I can provide photos if you want to understand more what is happening!

EDIT:
Here is what happens when the ethernet cable is connected to the pc:

And here is what happens when i try to connect with the wireless usb:

 

[Aquinus]

Okay I will need a bit more detail about the problem first as I am still a little confused as to what the issue is. From what I can gather the problem seems to be this:

When you connect your Desktop PC to the wired, ethernet network using a cat5/e/6 cable your network adapter does not register there as being any connection. In addition to this when you try and connect using a wireless USB modem (that has been working on a laptop) this also does not give you a connection.

You stated there is a red cross on the network adapter, however you didn't tell us where this red cross was. Is it in device manager or is it in the network adapter control panel interface?

What operating system are you running on this machine?

Is your wireless access point also acting a switch (i.e. are you connecting your machine to the same device that provides wireless access)?

You said this problem started happening a few days ago when you had a power outage?

I am assuming alot of information about a fair few of these points, however I think it would be worth resetting your TCP/IP protocols. To do this launch command prompt and run the following command:

netsh int ip reset

It sounds like an issue with the router/wireless adapter since this is impacting multiple computers. Someone needs to learn to read the entire thread.

Ok, first of all, i have to change something on your post. When i insert the wireless usb, there are identified all connections, but i cannot access my own connection in my home. The red cross is in the ethernet networks on the left of the clock. There is no red cross when i put the wireless usb.
The OS is windows 7 64bit ultimate. I am connecting my machine to the same wireless access that the laptop is.
Last but not least, i tried your command on run and nothing happened. Still the same.
I can provide photos if you want to understand more what is happening!

EDIT:
Here is what happens when the ethernet cable is connected to the pc:
http://i50.tinypic.com/2uswq51.jpg

And here is what happens when i try to connect with the wireless usb:
http://i45.tinypic.com/23kz20z.jpg

Yeah, give us some pictures. It might help us figure out what is going on by seeing what you see.

Edit: Ah, you posted it faster than I could reply. Have you just restarted your router since?
BTW, I'm now convinced it is your router if it acts like this on both machines.

 

[GSquadron]

I told the technicians that is the router, but they didn't believe me!
They say that if it works on the laptop it is the pc fault that doesnt work

 

[Aquinus]

I told the technicians that is the router, but they didn't believe me!

Have you restarted it yet?

 

[GSquadron]

i already have. Also, i have resetted it and that caused the laptop not to work anymore with the wireless just like the pc. I needed to go there again and tell them the reset made the wireless redundant on both computers.

 

[Aquinus]

i already have. Also, i have resetted it and that caused the laptop not to work anymore with the wireless just like the pc. I needed to go there again and tell them the reset made the wireless redundant on both computers.

Is your Oxygen router also your modem? Is it one of those all-in-one deals or is the modem separate?

 

[GSquadron]

All in one deals
Also, when i use windows troubleshot it says:
Investigate your router or access point issues.
Access point or router is referring to the all in deal modem thingy?

Actually this is what windows says:

 

[Aquinus]

I think you need to yell at the tech and tell him to try another one.