I am having BSOD mainly after sleep/hibernation. But the problem started to occur more frequently and yesterday it happened when I was using my compuer. At the begining I came in the morning to wake my PC and would find that it is already on (without any bsod message). But my applications were closed as if the computer was rapidly rebooted. It happened at night. Perhaps there was a planned task that I later turned off. I mean the task waked the comuper, an error occured and restarted the message without me seeing bsod. (Of course this might only be my imagination). EDIT: Sometimes when I found the computer on in the morning there a black screen with a message that there was no drive detected (exactly 0 drives and asking for a booting device). But when I pressed power on button the computer would wake perfectly fine without any problems, just as I left it the day before (and without loosing my data). Right from the beginning I had bluetooth short mouse freeze problems. The mouse freezes and after a delay it accelerates quickly. Sometimes freezes are short that it only worsens accuracy and sometimes even 2 seconds. But mainly short freezez occur. I checked that I have no such option in my mouse drivers as energy management. It is an A4tech bluetooth mouse G7-600NX. I have no problems with this mouse on Windows 7. And the drivers seem to work fine, since the dpi adjustment works for me. I thought that the problem might by GPU: AMD Fire Pro v5900. But when I use ArchiCAD in 3D window there are no delays (I would say the card is much better than I need). And I installed latest drivers. When I downloaded the drivers again a few days ago, the installation went on quickly and finished. Then a communicate went on screen (that I should have run it as an administrator). So I tried to install the drivers as administrator but after the installation finished there was no "successfully installed window" (no idea why). But nothing changed (for better or worse). When I tried to plug a wired mouse (some cheep one), it would install and work for 2 minutes. Then the USB socket was disabled until a reboot. So I switched the mouse from USB socket to socket. And in one socket it worked for 2 hours. And then it stopped. Once it stopped even my keyboard (Microsoft keybord). I can't say why my SSD drive could make problems since it is an Intel SSD which got a reward on tom's hardware. All the drivers that I have were downloaded from internet in late February 2013. Some of them I reinstalled in an effort to stop BSODs.