aludka

In short, if you want to control the speed of the fan your safest bet would be to get a PWM fan. One work of advice though, many motherboards with 4-pin PWM headers do not offer true PWM control. They are instead voltage controlers with a forth pin. Why they forth pin is there I have no idea. Typically though, the CPU fan header is a true PWM controller.

If you are having BSODs with clean installs of both Windows 7 and 8 it is not a software or OS issue. It's a hardware problem. The best way to troubleshoot these is to do a basic build and start adding pieces one at a time. Its a bit time consuming but can usually root out the problem hardware. Before we move onto that though lets check the logs. In eventviewer, under custom views right click and create a custom view. Select the event levels Critical, Warning and Error. Click the radio button "By Source" and in the drop down menu about half way down or so seleck disk and Disk. Click ok. On the second window name your custom view whatever you want and click ok.
 
Over on the left under eventviewer select you new custom view. This will bring up all the errors related to your disks and which disks they are. This may clue you into the problem you are having. If it is your samsung SSD you don't have to stop using it. Set up an RMA with samsung and they will replace it for you. If the event viewer does not yield any results send me a PM and I'll do what I can to walk you through some more troubleshooting steps.