Hello and Welcome to Windows7forums.com
We need a little bit more info then this to accurately help you..

As Cybercore said, was this a Clean install or an Upgrade install? Or is it the factory image that was on the pc when you started it up for the first time? Is it running a 32-bit or 64-bit version of Windows 7? What is the make and model of your new PC?
When you first turned on your new PC on, did you install all/any of the "important" Windows Updates that were in queue? Did you also install any of the "Optional" Windows Updates that were in queue? I only ask about the optional one's because I have in the past had problems with a pc after installing some of those.. I guess theres a reason why they are only "optional"..
It really sounds to me like a GPU related issue.. But I can't say for sure until you provide the answers to the questions Cybercore and myself have asked..
