No devices detected?

[Yukionna]

For some reason whenever I try to burn something with imgburn it gives me this

I 18:00:31 ImgBurn Version 2.5.1.0 started!
I 18:00:31 Microsoft Windows 7 Ultimate x64 Edition (6.1, Build 7600)
I 18:00:31 Total Physical Memory: 916,024 KB - Available: 232,724 KB
I 18:00:31 Initialising SPTI...
I 18:00:31 Searching for SCSI / ATAPI devices...
W 18:00:31 No devices detected!

And when I go to My Computer for some reason my cd drive isn't there, can anyone help me?

I used to be able to burn, dunno why its not letting me now

[LIGHTNING UK!]

Look in device manager, is the drive listed there? Does it have a yellow exclamation mark next to it?

If you don't see it at all, unplug the SATA cable from the motherboard / drive and then plug it in again. Then unplug the power from the drive and plug it back in again.