I have a sony Vaio VGN-SZ32CP dual core laptop running win 7 ultimate 32 bit.
In "computer" only my hard drive shows up, not my optical drive.
All drivers seem to be installed but i notice that in dev mgr the first ATA channel, channel 0, likely the hard drive, is mentioned twice. Channel 1,
which is likely the cdrom, only shows up once.
I notice that when a cd is in the drive it spins up for a while and then stops, which would be normal i think.
Can anyone help me with this?
thank you

Does it show up under 'Device Manager' DVD/CDROM Drives?

Look at your bios and see if it is showing up there. Also is this a new install on the OS or is this something that has come up during the use of the machine? i.e. It worked before and has now quit ?

I've seen that before, it could be this fix:
(Solved) CD Drive not found not Detect - Remove Upper and Lower FilterTech Support All (http://www.techsupportall.com/fixed-solved-cd-drive-not-found-not-detect-remove-upper-and-lower-filter/)