Monitor is messed up

The Monitor for my t61 is not working... It seems to freeze up and show a grey screen at sometimes. The Monitor would react to tapping The side of It.
This is what my Monitor looks like sometimes 

this could be an issue with the LCD itself, where the LCD controller is broken or have a loose connection. 
Does the same problem occur on external LCD?
Regards,
Jin Li
May this year, be the year of 'DO'!
I am a volunteer, and not a paid staff of Lenovo or Microsoft

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