dvd drive not working after installing windows 7

hi,
my dvd writer is giving problems and not working after installing windows 7.
when ever i put a cd/dvd it shows it as a blank cd, sometimes it doesnt even read .
hope u can help .

Check with DVD manufacturer for a windows 7 driver update.

i have tried updating the driver but it says driver up to date .

I find nothing on Sony Asia Pacific's site to indicate the vgn-cr313h is supported for W7 upgrade and can not find any W7 drivers.


Did you run the Microsoft Upgrade Advisor prior to installing W7?

yes you are right there ,originally my computer came with windows vista ,
i did not run windows advisor upgrade before installing windows 7 but i have tried it now,
barring from a couple of things everything is compatible with the windows 7.
maybe it does need a windows 7 driver for the dvd drive but as u hv seen on sony vaio site
its not provided there .

If you go in to the BIOS before windows loads and set the DVD drive as the first boot device, that may take care of it for you.

Worth a try.

im not sure exactly how to do that ... can u explain it in detail ..

Try one of these two fixes from Windows7News.com:

To fix the problem that dvd drives are not recognized in Windows 7 permanently do the following:
Option 1:

1. Press Windows R, type regedit and press enter.
2. Open the Registry key
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E965-E325-11CE-BFC1-08002BE10318}
3. In the right pane, right-click UpperFilters, and then click Delete.
4. Click Yes to confirm the removal of the UpperFilters registry entry.
5. In the right pane, right-click LowerFilters, and then click Delete.
6. Click Yes to confirm the removal of the LowerFilters registry entry.
7. Exit Registry Editor, and then restart the computer.
Note After you remove the UpperFilters registry entry and the LowerFilters registry entry, you may lose functionality in certain programs such as CD recording programs. In this scenario, you must reinstall any affected programs. If the problem recurs, contact the program vendor to determine whether an update is available for the program.

Option 2:
Click on Start -> All Programs -> Accessories -> Right click Command Prompt -> Run as administrator.
Paste the following line and hit enter afterwards
bcdedit /set loadoptions DDISABLE_INTEGRITY_CHECKS
This should solve the problem of DVD drives not being recognized in Windows 7.

Also try this fix if you're still having issues:

Temporary Windows 7 DVD Drive Not Working or Recognized Fix – Solution 1

Restart your Windows 7 machine and as the computer starts press F8. The startup screen should look like this:

Select the Disable Driver Signature Enforcement option and click Enter.
Let Windows 7 x64 or x86 boot and see if your DVD or CD drive is working correctly.

i hv tried the first two solutions but to no effect i will try the third option and will
tell u wat happens ..

the start up screen after pressing f8 did not look like the one u hv shown
it was red coloured and it didnt say wat u hv shown in that image .