Sorry I'm a bit late to the party as I only just noticed this thread
looking over your posts I doubt this is hardware and feel this is most likely to be a software issue ?
this latest .dmp file when run through windows debugger comes up with
when debugger states
KMODE_EXCEPTION_NOT_HANDLED it's very likely a driver initiated by a process, which in this case was
Chrome then references an illegal address and this crashes the NT kernel >
ntkrnlmp.exe ?
(
ntkrnlmp.exe = "
NT KeRNeL, Multi-Processor version" (Windows) BSODs frequently get attributed to
ntkrnlmp, purely because it was dealing with bad data ! )
the first steps to cure this is to find the offending driver and update it ?
these two drivers named in the crash are a year out of date
Rt64win7.sys is your realtek network card driver ?
atikmdag.sys is your ATI gfx card ?
install the latest version of BIOS available for your motherboard ?
also what antivirus and or third party firewall are you using ?
to help eliminate the possibility this could be hardware please test your memory, and I get consistent results by burning to CD (using an ISO burner) & running from boot
memtest86+ for at least 5 passes and
moving the sticks between slots running them together and singly to verify motherboard ram slots work as well as each ram stick ?
there are more steps to take if this doesn't solve your problem as ideally we could do with a crash .dmp that names the offending driver , but for now update those old drivers and run memtest86 then let us know how it goes ?