Laptop Crashes / Screen Blacks Out - No Integrity Errors

I have an ongoing problems with Crashes on my laptop they are rarely BSODs and are usually just like interrupts which black out my screen and cause me to have to restart my laptop. My laptop also occasionally freezes on the windows screen or when I finally log into my account.

Dump Files Attachment 211598
System Health Report Attachment 211600
System Info Attachment 211599

Some more information: I run AVG bought and paid for as my Anti Virus system and have preformed numerous full scans with no problems at all. I also have AVG PC Tune up which i check often and scan for to optimize my Laptops performance once again besides the usual defrag nothing serious has ever been captured. I Have the free version of Malware Bytes, didn't start the trial so its always on my computer. Again Scans come up impeccably clean. I downloaded and used Memtest86+ ran 10 passes completely clean nothing was reported in need of fixing.

Sfc /scannow came back as no integrity errors. An Extended Version of Windows Memory Diagnostics with 5 passes came back clean also. There is no overheating of any sort. I do However use an external Hard drive to Store most of my video games in (WoW, LoL, SWtoR, Diablo 3, Warcraft 3). And after multiple crashes the Software needed to access my Hard Drive "Stops Working" and ill need to uninstall and re install it. Its a WD Smartware product. I feel like I'm flipping a coin when I turn on my laptop because it will crash numerous times and then finally that one time my laptop runs smooth w/o a problem.