DVD-ROM Unit problem

If I try to load a DVD disc it'll only make some loud breath voice which falls after 2 seconds and it periodically repeats until I take out the disc. Here's the information I found in msinfo32 (I translate it from my motherlanguage to english so it's probably not 100% correct):
Unit F:
Description Unit CD-ROM
Medium Loaded No
Medium Type DVD Writer
Name hp DVD RW AD-7721H
Manufacturer (Standard unit CD-ROM)
State OK
Transmission rate -1.00 kB/s
Target ID device SCSI 1
ID device PNP IDE\CDROMHP_DVD_RW_AD-7721H______________________1.80____\4&3A93AF2C&0&0.1.0
Driver c:\windows\system32\drivers\cdrom.sys (6.1.7601.17514, 144,00 kB (147 456 bajtů), 18.8.2012 17:12)
Could you please tell me if it's a software disruption or the DVD ROM is simply damaged.

Hi,
The first thing I'd suggest is to eject the drive tray and use a soft material like cotton to gently clean the lens.
Check if this has made any difference.
If not, try the automated fixit from Microsoft on the link below.
Windows 7
Vista
Check if the drive is now working.
If it still doesn't work, click the Start Menu, open All Programs, open Accessories, right click the Command Prompt and select 'Run as Administrator'.  In to the prompt type the following command and hit enter.
sfc /scannow                 ( note that there is a space between sfc and the / )
Let the process complete, then type exit and hit enter. 
Next, click the Start Menu, open the Control Panel and click on Device Manager.  Next click to open DVD/CD-ROM Drives.  Right click the drive and select uninstall.  Do not delete drivers if asked.  When the device has uninstalled click on the 'Scan for Hardware Changes' icon ( usually just below Help on the toolbar ).  Let windows reinstall the drive and see if it now works.
Regards,
DP-K
****Click the White thumb to say thanks****
****Please mark Accept As Solution if it solves your problem****
****I don't work for HP****
Microsoft MVP - Windows Experience

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