AlienWare M17xR3 Flicker

I have one strange problem. It starts with games once they are up the game will flicker whether its minimized or not. itll flicker by its self but when you start pressing the left mouse button fast or slow it does it, and with that when it flickers its a mix of the game and desk top. sometimes it flickers some times it wont but it doesnt do it with all games just some. Never had this problem until 2 days ago IDK whats going on can someone please give some suggestions?

NVIDIA GeForce GTX 460M  1.5GB 
OS Name    Microsoft Windows 7 Home Premium
Version    6.1.7601 Service Pack 1 Build 7601
Other OS Description     Not Available
OS Manufacturer    Microsoft Corporation
System Name   
System Manufacturer    Alienware
System Model    M17xR3
System Type    x64-based PC
Processor    Intel(R) Core(TM) i7-2820QM CPU @ 2.30GHz, 2301 Mhz, 4 Core(s), 8 Logical Processor(s)
BIOS Version/Date    Alienware A08, 7/29/2011
SMBIOS Version    2.7
Windows Directory    C:\Windows
System Directory    C:\Windows\system32
Boot Device    \Device\HarddiskVolume2
Locale    United States
Hardware Abstraction Layer    Version = "6.1.7601.17514"
User Name   
Time Zone    Central Daylight Time
Installed Physical Memory (RAM)    8.00 GB
Total Physical Memory    7.95 GB
Available Physical Memory    5.48 GB
Total Virtual Memory    15.9 GB
Available Virtual Memory    12.9 GB
Page File Space    7.95 GB
Page File    C:\pagefile.sys