PC wont turn on

[ic3box]

So i took my pc out and clean it using an air compressor and installed a new SSD. Now my pc wont turn on anymore, i opened the case and my motherboard still have a green led light so i dont think its a psu problem. The only thing i added was an SSD so wth is wrong with my pc?

motherboard: ASUS P8P67
CPU: i5 2500k
PSU: XFX 850W black edition
HDD: WD Green and samsung 840 pro ssd
GPU: HD 6870

 

[Ubrales]

Re-check the SATA cables that connect the drive with the OS to the motherboard. The 'fit' between the SATA cables and the SATA ports on the motherboard is questionable in some cases. I had to experiment with my cables before I found a combination that worked securely.

 

[ic3box]

okay so apparently it was my SSD. I dunno if its the actual SSD or the cable or even the socket. When i removed the SSD everything works fine again, so can anyone help me troubleshoot this? Why is the SSD preventing me from powering up my PC?

 

[Ubrales]

Check and make sure that the disk containing the OS is the first boot device in the BIOS. It is possible that the boot order may have changed when you installed the SSD.