PC Beeps once does not power on

sbolton19

Prominent
Aug 1, 2017
1
0
510
Hello,
I recently installed a new motherboard and as soon as I hit the power button it beeps once and powers off instantly (less then a second). I have disconnected and reconnected everything to make sure everything is connected correctly. I have disconnected all unessential hardware and still nothing. Please help if you can. Thanks!

PC specs

Motherboard: MSI 970A GAMING PRO CARBON AM3+/AM3
Processor: AMD Phenom II 3.2 GHz
RAM: 16GB DDR 3 RAM
Video Card: XFX AMD Radeon HD 6950
Power Supply: Corsair CX750M 80+ Bronze Power Supply