My cd rom wont open - Dell (0F146) Internal DVD Drive

You might have to physically unplug the leads for this cd/dvd then plug them back this should activate the found new hardware wizard or
you might have to uninstall then restart your computer then reinstall your DVD/CD then reinstall the driver for this device
if your computer came with a motherboard disk the drivers could be on it
click start control panel administrive tools computer management device manager scroll down cd dvdrom drives if you see a yellow question or exclamation mark? ! or a red x right click you will need to update the driver or
select properties general troubleshoot, select driver click to reinstall drivers click update driver
also if there is a small hole on the front of your cd drive push a straightened paperclip until you feel it push down on a button this should open up the cd drive
hope this helps you