Hi! My computer is a clean install of Win 7 64bit. The rig is a few years old, having a new graphic card and a new main HDD (the last one died). My problem is few days old: Computer freezes and don't want to get up after rebooting. I need to wait for a few minutes or try several times for it to start. When this happens I can hear hdd and the fans starting up but there is no "single beep" as always and the monitor is not getting into the active mode. If I wait a few minutes - it's starting up no problem. Then sometimes after 1,2 or even 6 hours of normal work the system freezes again. Once I had a BSOD with memory_management info.But only once. I have recently updated my BIOS succesfully thinking it may help but it didn't. I have the latest graphic drivers. I was just about to run the Memtest86+ test from a USB for overnight when I found a post on this forum regarding some similar problem. There was a forum member that suggested running a OCCT test. So I downloaded the software and gave it a try just for a few minutes to check out the software. I didn't have to wait long - after 1,5min there was a "Error detected" I'm attaching all the logs from this test.I don't know what does all this info means. Can someone please help me figure it out? Cheers!