I can only hear out of my right headphone and speaker

There's a couple built into Windows.

Selective area:
Click on the orb and type snip, then click on Snipping Tool. Mouse to the area you want to start a capture, left click and drag to the opposite corner. You can then save it with a file name.

Whole screen:
Press and hold CTRL then press Print Screen. This copies the image to the Clipboard. You then need to open your image/picture editor and Paste into that. Then save with a file name.

The Snipping tool is much easier and faster.

Ok, you posted while I was typing.

Click the Orb, select Control Panel. If the control panel doesn't show all items (Category View), Click on Hardware and Sound then check to see if there's a Realtek HD Audio Manager and/or an Nvidia Control Console (or name similar).

Run (click) them one at a time and check for conflicts on the speaker settings. Stereo/Mono, balance, etc.

By the way, I not familiar with the Nvidia settings so you'll need to post the screens if you need help there.

The right settings will be what matches your system components. If you have speakers, set them to stereo. If you don't and use only headphones, set the speaker options anyway. They use the same parameters.

I don't use Skype and don't know what ts3 might be. Besides that, I'm working on about six different threads right now.

Have the headphones been plugged in the whole time? If so, unplug, count to 10 and plug them back in.