BSOD x50 x1a among others

Hi guys, first I would like to thank you for helping me out on a regular basis, but this time I couldnt quite read my way out of it. I think I need help looking through some dumps.

I built my father a new computer, which gives BSOD on a non regular basis, from twice a day to once every second day. This while doing anything or nothing.

Specs:
-ASUS M5A99X EVO, Socket-AM3+
-AMD FX-4100 4-Core Processor
-Corsair Vengeance DDR3 1600MHz 8GB CL9 Kit 2x4GB
-Corsair SSD Force Series GT 240GB
-Corsair CX V2 430W PSU
-Radeon HD5600 series (leftover from the old computer)
-Two older sata backup disks running software raid, mirroring.

OS:
Win 7 Ultimate x64 SP1 (fully updated)

What I've done so far:
-Memtest86, 2 cycles which gave no errors.
-Chkdsk
-SFC, no integrity violations.
-Removed DTlite
-Moved RAM modules from slots 1-3 to 2-4.
-Cranked the DRAM voltage up various levels ~1.5-1.55 (did the trick on my own computer)
-Verifier with all non-MS drivers for several hours without crashing.

From all the googling and troubleshooting I've done the last two weeks it seems to be memory related, so maybe 2 cycles on memtest was not enough to reveal errors? Until I get the results from a longer memtest it would be great if anyone would look through my minidumps (14), for any signs of obvious problems.

I attached the minidumps, theres 14 of them. The last 4-5 seems to be very similar.


Any help would be greatly appreciated, thanks.