BSOD even after many attempts to repair! Dell Inspiron 17R

I have a Dell Inspiron 17R (7010) that I bought brand new and only used for about a year. The system keeps crashing, displaying various error codes that range from memory management to bad pool header.

I've tried replacing the hard drive, the RAM cards, testing the video card, reinstalling Windows 7 AND flashing the BIOS. Someone please help me figure out what's going on with this thing.

I can say that I will absolutely never purchase a Dell again, simply for the customer service. I was a month inside of my warranty when this started happening, and Dell kept putting me off until the remainder of my warranty expired. THEN they spent more time trying to talk me into renewing the warranty than they spent trying to help me solve the problem. Any help would be greatly apprreciated.

I did notice that upon startup the laptop keeps freezing during the following test:

** Memory - WCMATS Test ** 00-00400000h-00-7727BFFFh (1902 MB) with 4CPU(s)