BSOD after windows starts - faulty drivers or damaged gpu? :/

Hello Folks,

i got a BSOD since upgrading my driver and installation of my new vga fan.
im using the arctic cooling accelero xtreme 3 and after i upgraded to a raedon wattmen driver suite the fan was broken. so i ordered a sparefan and its running fine again.
now i was reinstall my windows 7 x64 freshly but im getting bsod after restarting the computer after i reinstalled the new drivers.
only safemode helps and ive deinstall the driver packages with the amd cleanup tool.
i also tried to grab a new windows iso with integrated updates etc. installed if of a usb stick, but the bsod persist
also i installed windows so many times today, that my ssds **** up my ahci when the pc/bios starts, atm i got win 7 installed on a western digital velociraptor (ive to hotplug the ssd and format the ssd within a started windows to solve it)

funny thing this poster got a "similiar" problem like me.
atikmpag.sys, dxgkrnl.sys, and dxgmms1.sys - Win 7x64
same atikmpag.sys dxkrnl.sys dxgmms1.sys :x

when im using the amd minimal setup, it tells me that the driver is already installed and when im using older version, there happens an error but i cant see any errors within the logfiles of the setup x.X

psu bequiet pure power 630watt. BQT L8-CM-630watt.
cooling gpu arctic cooling accelero xtreme 3 on gpu-pwm
cooling cpu scythe mugen 2.

i read somewhere, that x5-x7 series of bqt psu arent that reliable and can cause bluescreens. maybe its more heavy used because i overclocked the cpu to 3.2ghz with 400er fsb. but i kept the orginal vid (roughly 1.25v)