[Saggers17]

Hi guys,
I tried to install a new PCI wireless card (which I am 90% certain now to be faulty) and this appears to have broken my pc.
I can log in to my account, then 4-5 seconds after loading the desktop the pc will either blue screen or just freeze completely.
I have no idea what to do and have tried a restore and updating drivers, but I am not too good at this kind of issue and could really use some help in words even I good understand!

My system is
Windows 7 home premium
i5-2500k processor
Gigabyte z68ap-d3 motherboard
radeon HD 6950 motherboard
8 gb ram

I have had three different blue screen codes of which I have attached the details of

Thanks for any help at all

Tom