I get random BSOD-errors (pfn-list corrupt, memory management etc.) everytime I shutdown my computer and start it again. I have Windows 7 64bit Home Premium and I have re-installed it several times, I also tried the 32bit version. Now I have had to put the computer to sleep-mode for night and as it is not wise thing to do when considering the energy bill, I need to come up with a solution. The odd thing is that when I restart my computer there's no problems and Windows starts as it should. I have tested memories, processor, hard-drives and motherboard for 24-30 hours each and there is no errors. My CPU-Z-data: Now I'm asking for your help. I already asked the same thing on a Finnish forum and they couldn't answer me. I'm sorry if I forgot to give you some vital information needed to solve the problem and also I apologize for typos and other mistakes, but it's late and I got to get some sleep.