BSODs since March and I am COMPLETELY at my wits end. PLEASE help.

Hi Seven Forums!
I'm new to the site and I also have absolutely no idea what else to do at this point.

In July of 2011, I'd purchased an HP ENVY 17 2090nr 3D Laptop, and have never had a single hardware or software issue with it since. (With the exception of overheating, which was a relatively easy thing to deal with.) But since March of this year, out of nowhere, its...

• Crashed repeatedly, and because of a few different drivers every other time.
-- The most common one being ntoskrnl.exe

• Been reinstalled 3 times.
-- Once of my own volition, the others because I had no choice-- the second crash was so bad that Windows 7 was wiped out of my system completely. The third time was because I'd improperly installed Windows 7 on (as I understand it) what was half of my total hard drive space, 1.35TB. After deleting an old volume and then making a new one, guess what? I needed to reinstall Windows 7, but I digress.

Even after reinstalling 3 times, it's still giving me BSODs left and right, which has sadly forced me to believe that this is more than just a software issue, but I'm clearly not the expert here. Attached are my dump files and anything else that may be needed to determine what specifically is causing these crashes, per the requirements outlined here.

Please, PLEASE help me. At the moment this is the only computer I have access to for my animation courses and if there's any possible way that I can fix it-- even if it means sending it to HP for repair-- then I need to know what to do as soon as possible.

Thanks in advance.

Hi, Arc!

Thank you so much for getting back to me. I ran the memtest86+ for a whopping 42 hours (roughly) and nothing came up. No indication of errors, no red lines/bars-- nothing. Here's what my screen looked like before I hit esc.

https://41.media.tumblr.com/5a959b2f...10_r1_1280.jpg

UPDATE: Minutes after posting my last reply, my computer crashed, and now I have nothing but a black screen that reads...
"No bootable device -- insert boot disk and press any key"

Thats's the same message I saw before I reinstalled Windows 7 last week. I'd be more upset if I had important files on the laptop, but this is still insanely frustrating.

I was afraid it would come to that, but it looks like I have no choice at the moment. Thanks for your help, Arc! =]