new system with multiple BSoD errors

Hello
i have just made a new system and am geting multiple Bsod errors and am EXtremly depressed so far i have installed win7 then another 7 then xp than 7 again and each time i got the Bsod, the last time i was reinstalling windows it took me 4 trys due to the Bsod error the kept on occouring . windows memory diognostic tool showed my ram is ok,
plese HElp me ive attached the dmp files

system info
hdd 500gb Western digital
core i5 2.6 with 4 cores
motherboard assus p7h55-m usb3
4 gb ram
gt240 1gb ddr5

P.S.64bit windows

Run memtest86 RAM - Test with Memtest86+

Code:

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*                        Bugcheck Analysis                                    *
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Use !analyze -v to get detailed debugging information.

BugCheck A, {fffffa84068d2f90, 2, 0, fffff80002c7aeeb}

Probably caused by : memory_corruption ( nt!MiResolveMappedFileFault+8b )

can it bee my Harddisk

thanks i found the problum

i found the problum it was my ram thanks to all who helped