Serious Ethernet Problem

[Viksy]

Hello everyone!

So I have a really bad problem with my Alienware Aurora(the first one). So I use my laptop as a wifi adapter for my Alienware since I don't have a wifi card and basically connect my laptop and pc with ethernet cable. I was able to stay connected for couple of weeks. So I woke up and turned my pc on and here comes the really strange problem. It says that I don't have valid IP config but even if I config it correctly it still doesn't work. It just shows that yellow triangle on the bottom. And so even if I try a wifi dongle it doesn't work now. Yes I did uninstall my drivers and install them back. Even another drivers. I also reinstalled my whole pc from windows 10 to 8.1 and the problem was still there. I have no ideas what to do.. I hope someone helps me.
Thanks in advance.

[Electronics Wizardy]

Does a linux usb work?

 

 

[Viksy]

Nope not really

[Electronics Wizardy]

Just now, Viksy said:

Nope not really

Then its probably bad hardware on the board.

[Viksy]

Well do you have any idea from where it could be ?

[Viksy]

I bought the Alienware on parts for only 250 euros. It came with the CPU and power supply aswell as the motherboard. I just putted 8 GB RAM of Corsair Vengeance and a Nvidia Geforce GTX+ 9800, also an 240 GB SSD and 500 GB HDD. The CPU is Intel Core-i7 920. I just don't get why it worked for like a month and then just stopped.