New Build Power Issues! HELP!

[mls1995]

Hi all,

Just built a new HTPC today (specs below). At first I couldn't get it to boot. I checked all the connections over and over and eventually it did boot. I was installing Windows 7 on it and walked away. I came back in the room and the system was off.

At this point, it either won't boot at all or if I flip the power supply enough and wait it will power on and shut down. I was in the bios and all components are detected.

Do I have a bad power supply? What should I do to test it? I won this power supply from [H] and Seasonic so I can't return it but I can buy a new one if that's what it takes. I've built multiple successful builds without any issues like this. I've even build in this case before.

CPU: Intel Core i7-6700K 4.0GHz Quad-Core Processor
CPU Cooler: Noctua NH-U9S 46.4 CFM CPU Cooler
Motherboard: Asus MAXIMUS VIII GENE Micro ATX LGA1151 Motherboard
Memory: G.Skill Ripjaws V Series 32GB (4 x 8GB) DDR4-2400 Memory
Storage: Samsung 850 Pro Series 256GB 2.5" Solid State Drive
Storage: Western Digital Red Pro 6TB 3.5" 7200RPM Internal Hard Drive
Storage: Western Digital Red Pro 6TB 3.5" 7200RPM Internal Hard Drive
Storage: Western Digital Red Pro 6TB 3.5" 7200RPM Internal Hard Drive
Storage: Western Digital Red Pro 6TB 3.5" 7200RPM Internal Hard Drive
Case: Silverstone GD08B (Black) HTPC Case
Power Supply: SeaSonic Snow Silent 750W 80+ Platinum Certified Fully-Modular ATX Power Supply
Optical Drive: LG WH14NS40 Blu-Ray/DVD/CD Writer
Operating System: Microsoft Windows 10 Home OEM (64-bit)

 

[mls1995]

Got into bios, same thing it just shuts itself off. Bummer. I did check my CPU temps and they were 28C so that's one thing down.

 

[Dangman]

Do a barebones test as described here:
http://hardforum.com/showpost.php?p=1033078594&postcount=3

 

[mls1995]

Do a barebones test as described here:
http://hardforum.com/showpost.php?p=1033078594&postcount=3

Thx, I'll definitely do that!