Hello, I have this problem: every time I start the computer, after it has been shut down for at least a few minutes, I get a BSOD. Most of the times it's really blurry, and the message says SYSTEM_SERVICE_EXCEPTION and mentions the file nvlddmkm.sys but that is not the only BSOD message I get. I then need to restart the computer several times, most often I end up opening the BIOS settings, only to make sure the HDD configuration has not changed for some reason, and afterwards - the computer starts and works normally. I tried to check the order of my HDD drives, suspecting that may be causing the problem, as I have 2 SATA HDD and 1 DVD, and an external HDD via USB. I ended up having only the HDD containing the OS attached, and the problem persisted. That HDD is split into 3 partitions, one of which only has an OS on it. Previously, I used to have dual boot configuration between Windows XP and Windows 8, but when installing Windows 8 I removed both old installations and did a format of that freed space on my HDD. I have also uninstalled the drivers that Windows found for my video card, and reinstalled the latest from the manufacturers site using "Run as Administrator", same for the antivirus software - as I found hints on the internet that those two things may be causing the problem. But it did not change anything. What is strange is that if I do a restart, I won't get a BSOD. Also if the time between shut down and start is very short. I have also received several BSOD while the computer was working. The computer was left idle at that time. I'm attaching all the diagnostic files as described in the sticky post of this topic. Thanks for any help!!!