So I added another SSD to my machine, but now it wont boot. 
I took the GPU and cleaned it with the hoover then reconnected it. I took out the lead that powers the CPU, tidied it up, then put it back. I took out a data/sata lead from a SSD (which snapped on the lead) so replaced it and reattached. I added another data/sata lead and added the new SSD. Went to boot, but just a black screen. The screen is registering, just showing nothing. Could it be trying to boot from the other SSD?
What've I done?
PS - ignore the shocking cable management.
		
		
	
	
		
	
	
		
			
		
		
	
				
			I took the GPU and cleaned it with the hoover then reconnected it. I took out the lead that powers the CPU, tidied it up, then put it back. I took out a data/sata lead from a SSD (which snapped on the lead) so replaced it and reattached. I added another data/sata lead and added the new SSD. Went to boot, but just a black screen. The screen is registering, just showing nothing. Could it be trying to boot from the other SSD?
What've I done?
PS - ignore the shocking cable management.
	
	
 
 
 Only the card, what about the rest of the things? Have you got another photo with all the dust removed? 