Weird semi-transparent line on monitor

[Senior1]

Hi there guys. So this problem started when i was playing gta5 (video-game) mid-game i think.
I saw the line showing up slowly didnt know it was there.
Its position its on the right up corner of the monitor and its lenght its like a quarter of the total lenght of the monitor.
The ends of the lines are the end fading type. Its not a crush ending like glitch type line its a smoother end line.
The line appears alwayas, not only when in games but also on windows
I updated my graphic card (nvidia gtx560) and its still there.
Monitor is running at 59 hertz refresh rate. I tried to 60 hertz and its still there.
Im on windows using i7 16 gigabytes of ram.
I chcked the cables conecting the graphics and the monitor and its well conected (hdmi).
My monitor is a SAMSUNG S24A450BW. Resolution is running in native at 1920x1200.
The line disappears almost completly when are dark colors on the screen but it shows up when there are light colors.
Couldn capture the line with a screenshoot command because it wasnt showing up in the screenshoot so i took a picture mannually.
My rig is 3 years old. Thanks guys for your time. Here are the pics in the links bellow


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https/s.yimg.com/hd/answers/i/1557a898af84432c919cef114da553b8_A.jpeg?a=answers&mr=0&x=1441323021&s=82aa683a02c1925767bfb70e68242085

 

[Laptop_Nerd]

Hi,

Please do try these steps that might help.
- Go to Device Manager and uninstall the graphic card driver same with Programs and Features, uninstall anything that's related to your graphics card either NVIDIA or AMD.
- Download and install the latest driver from NVIDIA driver. Here's the link: http/www.nvidia.com/download/index.aspx
- Use the Auto Detect feature so they could give you the latest and accurate driver for you laptop.
- Once the latest driver has been install reboot the laptop for all he changes to take effect.