...to wherever you bought it. Ask for a full refund, and then get a name brand LCD.
I very recently purchased a new 19 inch LCD monitor, a CMV CT-934D. After being in operation for 5 to 15 minutes, a purplish line appears down the middle of the screen, from top to bottom.
The problem doesn't appear to be related to any specific programs I'm running. I also took a printscreen shot then viewed the pic and the line wasn't present in the pic. I have made sure I am in the proper resolution. The monitor didn't come with any special drivers, just plug and play in windows. I am running XP SP2 with a 1.8 GHz P4.
I haven't seen any info on this specific problem on the web. Any advice you can give is greatly appreciated.