BSOD happens daily at completely random times, recent error:0x0000004E

Hi, I've been experiencing blue screens almost daily for 6 months now. It all start around the time I upgraded to windows 8 in the summer. Since then, I downgraded to windows 7 and also experienced blue screens daily. I've updated all motherboard drivers (chipset, lan, usb ect) as well as network card, graphics card and all third party drivers. My WhosCrashed analysis suggests that the issue may lie with a third party driver, but I've booted the computer with all but one peripheral and it continues to crash (I've changed the peripheral each time. Mouse->keyboard->different mouse etc). I've custom built this computer, so I had a suspicion that the hardware was faulty and that may be causing the issue, so I took the rig in for individual hardware testing, none of the hardware was faulty and was in working order. The blue screens range from when under load (gaming) to when I've just logged into windows and under loaded (browsing websites). The computer has frozen on blue screens, when asleep and on loading screens. Sometimes the computer will crash without a blue screen, but just display a white screen and freeze on that.

Any help would be appreciated

Peripherals
-> RAT 7 Cyborg mouse
-> Rosewill Mechanical Keyboard
-> Razer Kraken 7.1 Headphones