Before my PC crashed, it couldn't recognize the DVD drive.

[Advice Pro]

That PC hadn't been working until I put in a new power supply which has:

20-pin ATX Main Power Connector
ATX12V Power Connector (cube)
1 4-pin Floppy Drive
Connector
3 4-pin Molex Peripheral Connectors

From the power supply the Main Power Connector is connected to the motherboard, 2 4-pin Molex Connectors, that are connected to each other, plug into the two DVD drives. One 4-pin Molex Connector goes to a SATA Y-Adapter which goes to an SATA hard drive and an IDE hard drive.

What could be wrong that the PC won't boot and why weren't those drives recognized?

 

[Proximon]

http://www.tomshardware.com/forum/261145-31-build-post-checklist

Also please list full specs when asking for help.