First you say "the register is completely crapped and gives a lot of error incomprehensible." Then you say you're was doing full registry maintenance frequently. It should not be happening if it was truth. Then you say you're getting BSOD related to memory managment and you haven't done any ram tests at all. at the end you say it's ALREADY a graphic card fault...
Frankly speaking I believe you do not know what you're talking about and always trying to pretend as if you a comp. geek
Pathetic..