After purchasing my computer with Windows 7 installed (April 1st), I got a PC shop to transfer my stuff from my old XP machine. Shortly after, I tried to backup my PC using the Windows program but it failed several times and Device Manager had a yellow exclamation mark at Network adapters - Microsoft Teredo Tunneling Adapter. Updating and uninstalling have both failed. Under Properties - Device status it states - This device cannot start (Code 10).
I'm also experiencing numerous blue screens with Event Viewer displaying Kernal-power under Critical. I've run System File Checker tool (SFC) several times with one success which helped, but which have failed since. Also having constant browser crashes.
Thanks in advance for any advice offered.