Connecting new monitor disables other devices/Windows functions

Hello Everyone o/ UPDATED SEE BELOW!!!

I have had a 27" ASUS monitor and 2 tv's (32" and 55") hooked up to my pc. Today I replaced the 32" tv with another 27" ASUS monitor. After the installation, there were MANY problems with my PC. Please read details below. I did not get to do much troubleshooting because I had to leave for work, I would like to get some ideas now and I will update this post after I get home tonight.


INSTALLATION: (how the monitor was installed)
-PC was left on (ooops)
-32" tv was turned off and unplugged from PC
-Monitor cables installed to PC in order: Power (wall), DVI.
-Monitor cables installed to monitor in order: Power, DVI, sound.
-Monitor cable installed to PC: Sound (used double headphone jack to share sound with other monitor ooops)
-Verified sound still worked on original monitor
-New Monitor did not work, restart>> See below for errors after restart.
-New Monitor works 4.0

I know I made some mistakes and this is not the proper way to install a monitor, I was in a hurry. I'm posting these steps to see if this could be the cause of my issues, not so you can bash me for being an idiot, so please don't, although I do deserve it.



ERRORS: What happened.
-First and most noticably, Windows was very different. It looked as if it was an old version of Windows. The normal circle start button was replaced with a grey, square button that said START. The taskbar was also grey and square, not blue as usual. Desktop background and shortcuts were all correct.

-Sound was disabled and would not activate. All sound devices were missing.

-No internet. Ethernet connection was completely missing from tray.

-Windows would not restore. When trying to to go to a restore point, Windows stated System Restore was never activated. I have used it before so it's definitely been setup. When trying to setup Windows Restore again, Windows stated it could not be activated.

-NVIDIA tray tool was missing, as well as a few other tray icons.


UPDATE: Please see the attached picture. It is the error I received when trying to activate/troubleshoot my ethernet.



PC SPECS:

Windows 7 64 bit
http://www.newegg.com/Product/Product.aspx?Item=N82E16832116992

MOBO: ASROCK Z77
http://www.newegg.com/Product/Product.aspx?Item=N82E16813157293

CPU: i5-3570K Ivy
http://www.newegg.com/Product/Product.aspx?Item=N82E16819116504

GRAPHICS: GTX 680
http://www.newegg.com/Product/Product.aspx?Item=N82E16814130798

RAM: GSkill 8GB x4
http://www.newegg.com/Product/Product.aspx?Item=N82E16820231314

POWER SUPPLY: COOLER MASTER 850W
http://www.newegg.com/Product/Product.aspx?Item=N82E16817171048

MONITORS: ASUS VK278Q x2
http://www.newegg.com/Product/Product.aspx?Item=N82E16824236101

HDD x2:
Windows
http://www.newegg.com/Product/Product.aspx?Item=N82E16822136792

MISC HDD
Some old piece of crap I use for misc files.