I have a Cooler Master Cosmos SE case and I was planning on using the 4 fans that came with it (2 on the front as intakes, and 2 on the top and back as exhausts). But I ran in to some issues that I haven't been able to fix: when plugging in the fans to the pins on the motherboard, the system would start for a second and then immediately power down, which is remedied by simply not connecting the fans (although that's not ideal), and the other issue is that the front 2 fans with blue LEDs would simply not spin once I turn it on, the blue lights would stay on and nothing more, while the two exhaust fans without any fancy lights would spin just fine. But obviously this has caused negative pressure on the inside, so I've simply reversed the fan on top to serve as an intake. I've tried mixing up the molex connectors but sometimes that makes matters worse and none of the fans spin, so no luck there. I really want to have a more stable cooling system but I haven't found a fix.
Here are all the specs:
i7 6700 3.4 gHz (stock fan :v)
MSI GTX 1060 3gb Amor OCV1
MSI H170A Gaming Pro Motherboard
16gb G-Skills RipJaws DDR4 RAM (dual channel)
Adata 240gb SSD
WD Blue 1tb HDD
CoolerMaster B600 80+ Bronze PSU (600 watt)
Cooler Master Cosmos SE E-ATX case
OS: Win 10 Pro 64 bit
BIOS version: E7978IMS.280
P.S. I'm wasn't very familiar with molex connectors when I built my rig and had trouble connecting them so maybe the problem lies there but I don't know.