Problem with monitor and tv

[sharons-100]

Hello,I got a vga spliter so I could hook up my pc monitor and my TV as a monitor. I only want to run one at a time. However when I plug them both in neither one will come on. What is wrong.

 

[COLGeek]

What are the basic specifications for your system? Be sure to include the make/model of your video card as well as all other installed devices.