BSODs while playing games (Left 4 Dead 2, Borderlands 2)

Hi, so since last Saturday (6th September) I've been getting several BSODs almost every time I've tried playing games with my friends. On average I can play for about 20-30 minutes, I might get lucky once or twice and last for an hour, and a couple of times my pc has auto-rebooted itself after just being in the game for 5 minutes. The only one exception was one time I was merely browsing the internet and the machine just had a random BSOD (the machine is a custom build that I purchased from computerplanet.co.uk about 3 months ago). It's happening so often now that I can't really play with my friends until this problem has been resolved. This was the information of the last BSOD that happened:

Code:

Problem signature:
  Problem Event Name:	BlueScreen
  OS Version:	6.1.7601.2.1.0.768.3
  Locale ID:	2057

Additional information about the problem:
  BCCode:	116
  BCP1:	FFFFFA80106D04E0
  BCP2:	FFFFF8800EE507A0
  BCP3:	FFFFFFFFC000009A
  BCP4:	0000000000000004
  OS Version:	6_1_7601
  Service Pack:	1_0
  Product:	768_1

Files that help describe the problem:
  C:\Windows\Minidump\090814-5319-01.dmp
  C:\Users\Rick\AppData\Local\Temp\WER-15147-0.sysdata.xml

To save time and people asking the questions, I have already tried:

- Antivirus scan - Full computer scan with Microsoft Security Essentials: no problems at all
- System Restore - Went back a whole week and two Windows updates ago, BSODs still happened after that
- NVIDIA Driver - Reinstalled this (after system restore) and updated with latest version, still get BSODs
- Memory Diagnostics - Absolutely no problems reported there

There is one detail I feel is important to mention though: last Saturday was the day my Amazon delivery arrived: a BenQ XL2411Z Gaming Monitor, 24-inch, 1080p, 144hz. I cannot be 100% sure if a BSOD happened while I was using my regular monitor because I had regular crashes with L4D2 in the previous day or two before then that were not bluescreens, but I can't remember for certain if one of those crashes was heavy enough to force the pc to reboot itself. If I find the time to do it tomorrow, I'm going to unplug the BenQ and plug back in my old monitor and see if that makes a difference.

Anyway, the bluescreens have been happening with regularity ever since I've plugged in this new monitor. I can keep the computer on for hours non-stop, browse the internet, listen to music, watch videos and have no problems whatsoever, but playing games? My computer tires out and just auto-reboots at random times and there's no actual 'blue' screen, it just goes black and reboots and it's 50:50 if you see the BIOS or not.

I'm not savvy with computers so I really don't know what to make of this. What makes it hard to determine the root cause of this is that there isn't much that's consistent. It can't be a case of temperature because my PC exhales cold air when you put your hand next to the fan attached to the window panel on the side and needs a lot more than 5 minutes before that exhausted air starts to feel very warm. A couple of the BSODs have happened in less than 5 minutes. I don't believe it could be a form of physical damage to a component because how would my games be able to start or even last 30 minutes to an hour if that were the case? But my knowledge in this matter counts for little.

I've attached the zip and if you want to know my specs to see if that explains anything extra, they are on my profile.

Thanks

Ok so before I read your reply, I did a couple more tests to see if I could diagnose more specifically what was happening. I played a game for 5 minutes before suffering a bluescreen and got this information which is almost exactly the same as the previous one:

Code:

Problem signature:
  Problem Event Name:	BlueScreen
  OS Version:	6.1.7601.2.1.0.768.3
  Locale ID:	2057

Additional information about the problem:
  BCCode:	116
  BCP1:	FFFFFA800D8D74E0
  BCP2:	FFFFF8800FBA5D1C
  BCP3:	FFFFFFFFC000009A
  BCP4:	0000000000000004
  OS Version:	6_1_7601
  Service Pack:	1_0
  Product:	768_1

Files that help describe the problem:
  C:\Windows\Minidump\091014-5772-01.dmp
  C:\Users\Rick\AppData\Local\Temp\WER-17300-0.sysdata.xml

Then, I tried something I hadn't done before which was to run cmd.exe as admin and type <sfc/scannow> which reported this:

Verification 100% complete. Windows Resource Protection found corrupt files but was unable to fix some of them. Details are included in the CBS.Log windir\Logs\CBS\CBS.log. For example C:\Windows\Logs\CBS\CBS.log

I did think for a second maybe I have to reformat my Windows 7, but then I noticed in the bottom right corner that something else unrelated about an update flagged up from the Action Center, so I went to click on that and that's when I saw that all the bluescreen related problems were flagged as "NVIDIA Graphics Driver has stopped working" so it was at that point where I did a bit more research and realised that my previous attempt at reverting to a previous driver was not done 'properly' so I redid it again the right way (still keeping to the previous version instead of the latest one).

After doing a correct reinstall, I fired up the same game in the exact same conditions which made me bluescreen in the space of 5 minutes in the previous test. This time, the game was a success; it lasted for an hour (which doesn't confirm anything on it's own because a couple of other games have ran for almost that duration before a BSOD occurs) but the point was that I completed a game for the first time in a week which I've never been able to do since this started. I don't want to jump the gun yet because that's the only test I've done so far.

I still don't believe that the GPU temperature was the reason why the BSODs happened because I put my hand against the side panel and the air didn't feel so warm at that point where it bluescreened after just 5 minutes, in contrast to my successful run where the air was really warm but went for an hour and ran just fine. The timing of previous BSODs have been too inconsistent to hint at temperatures. As for CPU temperature, the last couple of days I've had the PC on for 12+ hours each day and doing several things non-game related and with no errors or bluescreens whatsoever.

Apologies for the zip folder not there, I honestly thought I had it attached to the previous post. I've checked the folder and it definitely has files in it so I will try attaching it again (and the preview tells me it's there so should be no problem this time). I can't say when I will be able to do more tests but if I do and they're good or bad, I'll let you know.

Thanks!

Just a quick update: I fully updated my Windows 7, but cmd.exe still reports that Windows Resource Protection found corrupt files and cannot fix them. Is it worth trying to fix them, or should I just go ahead with a reformat?

I found the thread which explains how to create a sfcdetails.txt and gathered the results from the latest sfc/scannow that I just did after making sure Windows is fully updated. The results are attached to this post.

Ok, I will do a clean install tomorrow when I have more available time.

There is one more thing that I noticed just now: when checking completely for any other outstanding updates, it had 3 optional updates: one regarding MSE and the other two being these:

Intel Corporation - Graphics Adapter WDDM1.1, Graphics Adapter WDDM1.2, Graphics Adapter WDDM1.3 - Intel(R) HD Graphics 4600

nVidia - Graphics Adapter WDDM1.1, Graphics Adapter WDDM1.2, Graphics Adapter WDDM1.3 - NVIDIA GeForce GTX 770

I never knew about these updates before, they may have been automatically installed at some point before I did the system restore or maybe they were always there as just optional updates. I doubt that installing these would be enough to resolve the problem completely, as the sfcdetails.txt shows that there are at least 12 missing files that I counted. But just wondering if it had any relevance.