There's tons of different heatsinks out there several of which can face different directions of that gets in the way.
P.S. I believe 'those cylindrical things just south of the cpu mount' is the heatsink for the northbridge on the motherboard.
Help, my PC with Windows 10 won't shut down properly
Since upgrading to Windows 10 my computer won't shut down properly. I use the menu button shutdown and the screen goes blank, but the system does not fully shut down. The only way to get it to shut down is to hold the physical power button down till it shuts down. Any suggestions?