DVD drive disappears after returning from sleep mode.

DVD drive disappears after returning from sleep mode. It is not listed in Device Manager and if I reseat the drive it makes no difference. I need to reboot, then it shows up in Device Manager as disabled. Running Win 7 64 Bit on a Dell Latitude E6410. Has anyone seen this before?

I Had a similar problem, and this fixed it.

Go to start and type regedit.
Look for string KEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E965-E325-11CE-BFC1-08002BE10318}
Click UpperFilters in the right pane. Delete it through menu/edit/remove. When prompted click Yes
Repeat these steps for Lowerfilters.

Close regedit and restart the computer. Your DVD drive should be back after that.

is it showing the in Bios or not