Hello Chris17, I’m sorry to hear that you are having issues with this system.
I would recommend using only the Lenovo Intel HD Graphics driver for your N581. Lenovo makes many customizations to the graphics drivers.
Bear in mind that the drivers we provided are generic; therefore sometimes these cannot be installed on OEM systems or the installation of them could overwrite Lenovo’s customizations and possibly change the functionality of the graphics.
Regarding the TV issue you are having, I would suggest you to try to connect the computer to another monitor or TV.
You can also try another HDMI cable.
A firmware update could be another solution and also check if the TV is in the correct mode.