Question MSI B350 Mortar and R7 1700 not posting - CPU debug LED on

[TadghsMuffins]

My B350's always taken a while to start up, however after my PC went into sleep mode after being alone I was unable to wake it. I restarted the PC and it wouldn't post. It turns on and all fans spin, but the troubleshooting LED remains on and the PC never posts.


I have since :

• Flushed the power
• Disconnected and reconnected the PSU
• Unplugged everything from the PC
• Plugged a keyboard back in, and a monitor.
• Re-seated the CPU
• Re-seated the RAM
• Re-seated my GPU
• Re-seated CMOS battery
• Shorted the CMOS pins
• Disconnected all of my fans and rebooted

I have absolutely no money and work to do so I'm a little panicked here. Does anybody have any suggestions or extra troubleshooting steps to take?

Thanks.
Tadgh.

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EDIT:
System Spec:
R7 1700@ 3.6GHz (NHD-15)
MSI B350 Tomahawk Arctic
GIGABYTE Windforce GTX 1080
16GB of RAM @2133
8TBs of HDD
128GB SSD
XFX 550w Bronze 80+ PSU

 

[rgd1101]

full system spec? include make and model of the psu

 

[TadghsMuffins]

full system spec? include make and model of the psu

My bad,

System Spec:
R7 1700@ 3.6GHz (NHD-15)
MSI B350 Tomahawk Arctic
GIGABYTE Windforce GTX 1080
16GB of RAM @2133
8TBs of HDD
128GB SSD
XFX 550w Bronze 80+ PSU

Added to post