How Can I Fix - All of a sudden, On Start up, the WIndows logo appears grainy and pixelated with color distortion.?

All of a sudden, On Start up, the WIndows logo appears grainy and pixelated with color distortion.

original title : Puzzled and frustrated
 
All of a sudden, On Start up, the WIndows logo appears grainy and pixelated with color distortion.
This continues for several minutes (white backgrounds are pink, for example...clears up suddenly and intermittently returns throughout session.
This is a new
computer..3 months old...called tech support; ..series of checks done on monitor on two separate occasions.
Occured after a Windows update installed and has not gone away since.
Thank you for any assistance.

Anwsers to the Problem All of a sudden, On Start up, the WIndows logo appears grainy and pixelated with color distortion.

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Hi,
 
·         Which was the update installed on the computer?
 
Method 1:
I would suggest you to perform system restore on the computer and check if it helps.
http://windows.microsoft.com/en-US/windows7/products/features/system-restore
Note: Restore the computer to an earlier point when it was working fine.
 
Method 2:
I also suggest you to run the troubleshooter from the below article and check if it helps.
http://windows.microsoft.com/en-US/windows7/Open-the-Display-Quality-troubleshooter

To check for Windows updates

1. Open Windows Update by clicking the Start button Picture of the Start button, clicking All Programs, and then clicking Windows Update.
2. In the left pane, click Check for updates, and then wait while Windows looks for the latest updates for your computer.
3. If any updates are found, click Install updates. Administrator permission required If you are prompted for an administrator password or confirmation, type the password or provide confirmation.

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