Sudden Computer Lockups While Playing Games

I've recently bought a computer which has has Windows 8.1 installed on it from the very beginning--had it for about 3-4 weeks by now. Everything off-games works great. 'Net runs smooth, boots up very well, etc. This is also a computer meant to play/run all sorts of games--it was benchmarked a bit higher than the average gaming computer.

This is the exact PC that I have, without any custom changes. And it is also the place I got it from with a warranty--you can also find the computer's more detailed specs in the link: CybertronPC Beast II TGM1214A Gaming PC - AMD FX-9590 4.70GHz, 32GB DDR3, 2TB HDD, DVDRW, 3GB GeForce GTX780, Liquid Cooled, Front Fan Control Panel, WiFi, Windows 8.1 at TigerDirect.com

My Problem: I noticed my problem happening when I have tried to play various games--Neverwinter Nights 2 (even though it is old, I think it still applies), Elderscrolls Online, The Secret World, WoW, Saints Row 4 (their newest one), The Forest (an alpha game on Steam) and some various others in between--some have less problems than others, however for the most recent one, I was playing Saints Row 4, and it completely froze the computer; I could not even use CTRL + ALT + Delete to get out of the game, so I was forced to press the Restart Button to restart the system.

*It is also worthy of note, that some games have less crashes than others. For example, NWN2 does not crash as often since I optimized it's settings and put it in compatibility mode. But sometimes it will flash black, then go back to the game screen, black again, etc.--it does this about 3-4 times before erroring and saying it needs to close, but that I can live with. I just wish to fix the complete lock-up freezes that make me restart my computer.

Most times I get these freezes, on the various ones I play, I get this warning in the Event Viewer, timed JUST before the freeze:

"A pointer device did not report a required angular physical range." - Event 259, Win32k (Win32k) (Warning)

+ System - Provider [ Name] Win32k - EventID 259 [ Qualifiers] 32768 Level 3 Task 0 Keywords 0x80000000000000 - TimeCreated [ SystemTime] 2014-06-25T09:29:29.551083000Z EventRecordID 4414 Channel System Computer Zach-PC Security
- EventData 00000000010000000000000003010080000000000000000000000000000000000000000000000000
Binary data:

In Words
0000: 00000000 00000001 00000000 80000103
0010: 00000000 00000000 00000000 00000000
0020: 00000000 00000000

In Bytes
0000: 00 00 00 00 01 00 00 00 ........
0008: 00 00 00 00 03 01 00 80 .......
0010: 00 00 00 00 00 00 00 00 ........
0018: 00 00 00 00 00 00 00 00 ........
0020: 00 00 00 00 00 00 00 00 ........

I was thinking that the recent graphics card drivers may have something to do with something, however I'm uncertain. My mouse or keyboard could be the problem, however I have used the keyboard and mouse that the computer had originally came with, so I am unsure why that would be an issue--however I did try switching out the plugs into other USBs, switching keyboards, switching mice, etc. I also have a flatscreen TV-monitor which is a Samsung, however I switched out an old monitor that died on me, but it had been doing the same thing before the switch as well.

I'm very unsure what to do at this point--I can play my games, but there are various interruptions (randomly) throughout play that make me regret getting this computer (I had a Windows 7 that ran 99% of my games, without any sort of problems; and the Windows 7 wasn't even geared to the teeth like this one is.) I have also attempted to run these games in Windows XP/etc compatability modes, to no avail.