Pink Screen on my Desktop

[Kirstencutie]

I'm actually using a lenovo laptop.. how can i fix it?
It looks like it might be green sometimes with pink lines i guess.. can anyone answer please?

 

[Yonose]

I assume you using a VGA cable?

If that is true then its problem with the connection from the VGA, get a DVI, HDMI or DP cable which have better and more stable connection.