You have several different error codes and only two cited anything definitive as the cause with one more so than the other. One simply said hardware while the other specifically cited the Nvidia driver nvlddmkm.sys as the issue.
At this point I suggest doing the following...
1. Go to our Download section and click on Utilities and then download Driver Sweeper 3.1 to your desktop screen and install.
2. Download the latest diver(s) for your video card but don't install them.
3. Uninstall your video card drivers and reboot your PC into Safe Mode. Run Driver Sweeper and remove ONLY the video card drivers. I had someone use it on their chipset drivers! If it doesn't find any video card drivers that is quite okay; just leave all other drivers alone.
4. Reboot and install new video card drivers.