I am trying to un install the windows 8 consumer preview, yet my laptop does not have a disk tray so I cannot but the windows seven disk in and reset my laptop, I have the product key code as well if that would help. can you please advise on what I should do ?
Dells don't have that option... at least not the ones I've worked on. You actually have to go to "Repair My Computer" from the Windows boot menu. It might not work with Windows 8 having been installed though.
i think you can burn the contents of the win7 install disc onto a usb key. after doing that, you go to your BIOS menu during boot and choose to boot off the usb. this circumvents the need for a cd. after choosing to boot off the usb, it will install win7 instead. make sure you install it into the partition of your existing OS. after that all that's left will be a windows.old file (this is your old win8 install and all of its data) and you can either leave it there or delete it.
btw i would do a bit of research before doing this, as i'm writing this based on hazy memories...
If you need to use an external, you can get an external optical drive for as little as 15 bucks. I've seen some in microcenter for that. But you buy an alienware and they don't give you a 15-20 dollar optical drive? Fail on Dell's part there.