I'm not sure what happened. Everything was fine and then I discovered that my cd/dvd & dvd DRIVE had disappeared from my computer. I went into control panel and checked my hardware devices. It appears that there is a problem with the drivers for theses two drive and also my SM bus controller. It states that the drivers are either missing or corrupt. Since I can't use the cd from Dell to install my drivers, I TRIED downloading them from Dell. The first one I tried was NEC-3650A_FW108C ...when I followed the instruction this is the message I get "Target NEC-NC-30650A is not found correctly." When I tried to install the driver for the other drive I get this message "No device found" I really need help!you could always try the system restore for a quick possible fix, if not you will need to see if it is recognised in your bios. If it is, your on the right track, you just need to find the right drivers.Can we have a bit more info about the drives?  What info does Device Manager give you about the drives (particularly, the names)?  Perhaps you're not downloading the correct drivers.  Also, have you checked the IDE cables to make sure they're seated properly?

You could try opening up Device Manager, locating the drivers in question, and then UNINSTALLING them.  When you reboot, let the computer reinstall them and see if it fixes your problem.Why can't you use the Dell CD to do this ? ?
You are missing some motherboard drivers here and they will need to be re-installed for that machine to operate properly.Ok, I tried to restore to an earlier date and it can't restore.  I also uninstalled the hardware in the device manager and when I restart the computer it doesn't correct the problem.  The drives are still not showing up in my computer and the manager says that there is a problem with the drivers. These are the devices that I'm having problems with:  Device Description
PHILIPS DVD-ROM DROM6316 and Device Description
_NEC DVD+-RW ND-3650A.

The reason that I can't use the Dell cd is because neither of my optical drives are working.
patio may be right about the motherboard drivers.  Go to the Dell driver page and enter your service tag.  When it takes you to the download page, download the Chipset Driver.  Then go down to Removable Media Storage Devices - Firmware and locate your devices and download the CORRESPONDING drivers.  There are different ones for different speeds, so make sure you get the ones that match your drive speeds (16x, 24x, 48x, etc.).

Install the chipset first.  If that doesn't work, then try the device drivers.  It also wouldn't be a bad idea to try the Dell forums if you're still having trouble.  There are some people there who are very knowledgeable when it comes to DELLS.