Computer blue screening when gaming - help/advice/suggestion

First thing's first.



God, I love that smiley.

My computer, which I built in the summer crashes whenever I play games for a short while. Oddly enough it is only a couple of games that do it, but what with the steam sale that is now the majority (aheh).

I'll give a list of games that crash and don't crash, then I will post my hardware specs and OS, and lastly I'll add any additional notes.

Crash
- Battlefield 3
- Splinter Cell Conviction
- Deus Ex
- Minecraft (all the time but only when it gets close to the two hour mark)
- Mirror's Edge
- Borderlands

Crash Immune
- Skyrim (crashed twice after a REALLY long time of gaming)
- Witcher 2
- Total War: SHOGUN 2
- Starcraft 2

Hardware & OS
OS: 64 bit Windows 7 Home Premium
Version: 6.1.7601 Service Pack 1 Build 7601
(basically its fully updated)

CPU: i5-2500K
Motherboard: P8P67 M-Pro (Rev 3.0)
RAM: Mushkin Silverline 8GB (2x4GB) DDR3 1333MHz
GPU: Asus EAH6870
HDD: Western Digital Caviar Black (WD1002FAEX) 1000GB
PSU: Antec TP-650 Truepower New 650W

Minidumps (last 5)
http://dl.dropbox.com/u/55865037/010412-15288-01.dmp
http://dl.dropbox.com/u/55865037/010512-23384-01.dmp
http://dl.dropbox.com/u/55865037/112111-12074-01.dmp
http://dl.dropbox.com/u/55865037/121011-12948-01.dmp
http://dl.dropbox.com/u/55865037/121211-13946-01.dmp
http://dl.dropbox.com/u/55865037/123011-15553-01.dmp

Not sure if this is helpful, but linked in the "Windows has recovered from an unexpected shutdown" error message that appears every time that the machine blue screens.
http://dl.dropbox.com/u/55865037/W [...] ysdata.xml
http://dl.dropbox.com/u/55865037/W [...] ysdata.xml

First thing I would check is Control Panel>System and Security>System

Ensure all of your ram is showing as usable.. If not a portion of 1 of your sticks may have went bad. This is one of the most common issues that cause random Blue Screen.

Also you didnt mention whether your running a 32 or 64 bit OS.

All of the RAM is (are?) showing up, and sorry for forgetting the 32/64 bit OS. It is a 64 bit. I'll edit my first post too.

I'm not using a mini/home theater style case, specifically I'm using an Antec 300 ATX.

Thanks for the quick reply.

run memtest on test 5 for 6 times at least.
What is very strange is that your system doesn't crash on witcher 2, one of the most demanding games out there, but crashes on mirror's edge and minecraft.
Run OCCT on gpu while running prime 95 on small ffts and give us temps for gpu and cpu. Also inform us about your overclock (if any) and your cpu cooler.

awesome. i hope gpu temps dropped to about 70 as well on load and yes prime95 small ffts + occt gpu test simultaneously will give you the absolute max temps as both cpu and gpu are stressed to extremes.