Loosing cd/dvd completely from device manager

Click start control panel administration tools computer management device manager scroll down cd-dvd rom drives you might see a yellow question /exclamation mark ? ! or a red X right click to update driver

you might have to physically unplug the leads for this cd/dvd restart your computer then plug them back this should activate the found new hardware wizard

if this does not fix the problem it might be a registry problem if you cant see your disk drive in windows explorer
Close all open programs

Click on Start, Run, and type regedit and press Enter
Click on the plus signs (+) next to the following folders

HKEY_LOCAL_MACHINE

SYSTEM

CurrentControlSet

Control

Class

{4D36E965-E325-11CE-BFC1-08002BE10318}

This folder is the DVD/CD-ROM Drive Class Description in the registry. Look for any of the following names in the right hand column.

Upper Filters

Lower Filters

Upper Filters.bak

Lower Filters.bak

If any of the above keys shown in step 4 are listed, right-click on them and choose Delete

After deleting the keys, close the registry editor
Reboot your computer
Open My Computer and check to see if your CD or DVD drives have returned. You may also want to open Device Manager and verify that the yellow exclamation and error code on the CD or DVD drive is gone.

hope this helps you

In device manager appears to work properly, but if the laser eye is damage, this problem not detected by the system, replace the CD drive.

replace the laser

You will have to uninstall the drive and reinstall again. I think the drivers for the drive is not properly installed. But if all this does not work, then I think you will have to do a system restore.

Best wishes

Use device manager to remove the dvd/cd unit, and then reboot the computer. Vista will locate the unit and install the driver.

It is possible that the dvd/cd unit has failed and requires repair or replacement

It has a 149.05 GB hard drive.

it might be a lens problem , if it was working ok before for sometime then its a drive related issue hardware try changing the drive go to ebay find a cheap one like under 60 bucks , also try checking with drive info tools

i had the same problems so i updated the firmware for the cd/dvd drive and now its working perfectly

this is a known issue check the microsoft website on how to work on this,. look for the part where you need to do something with your registry.

Is the hardware listed in the BIOS? When the computer first starts up hit a key to get in the BIOS (Esc, F2 or F10 are most likely). If it's not listed in the BIOS then it's likely a hardware problem. Try checking the connections to make sure it's plugged in and getting power.

If it is listed in the BIOS, it's likely a problem within Windows. Check Acer's website for known issues with the cd-rom.