Do I have too many drivers?

Simple answer: No

You have dual graphic cards installed

1 -Intel HD Graphics 4600, and

2 -Nvidia GeForce GTX 750ti

They require their own driver/s

When you are using low graphic demand (general everyday use) the PC/Laptop will use the lower powered graphics card- Intel HD Graphics 4600.

When you have demand for a more powerful graphic, such as a full HD movie or gaming the PC/Laptop will automatically utilise the power of the Nvidia GeForce GTX 750i graphics card.

This done to conserve power especially if running on battery power.

Your monitor/s also require their own driver/s, basically to connect to the PC/laptop.

The graphics cards provides information to be shown on your monitor through your PC/Laptop.

This is a basic description of the process.

Horizontal flickering lines maybe caused by graphics card drivers not being up to date: 

Download & install latest drivers for you OS from the link below;

Nvidia;

http://www.nvidia.com/Download/index.aspx?lang=en-

Intel;

http://www.intel.com/p/en_US/support/highlights/graphics/4cp-hd4600gfx

In my opinion, whilst at the Nvidia website - download & install the 'Nvidia GeForce Experience' app.

The app will advise you when a updated version of you graphics card is available, and will give you the option to download & install if you wish to do so. Nvidia update their drivers quiet frequently.

I have it installed on all my devices (which I have several).

I do not use Intel graphic card detection, because it uses Java, which I am not satisfied with Java security, so I down load their drivers manually.

Again the opinions expressed are mine, not in any way associated with MS.

Thank you Shilohbob for your answer, this is very helpful, and make sense.

Now I just need figure out why I get the flickering lines on my monitor. Any thoughts?

Thank you.