Windows 7 CD/DVD Error (code 52) - Won't display in Computer or read discs.

I have a Acer Aspire 5732Z with windows 7 and the CD/DVD disc tray doesn't work.

It doesn't appear in my Computer and when a disc is entered it makes the normal sounds but does nothing.
I have tried many discs but none work.

I went to the device manager and under DVD/CD-ROM drives the device HL-DT-ST DVDRAM GT31N is displayed with an error symbol.
Under this devices status section a message:
"Windows cannot verify the digital signature for the drivers required for this device. A recent hardware or software change might have installed a file that is signed incorrectly or damaged, or that might be malicious software from an unknown source. (Code 52)"
is displayed.

In driver details under the Driver tab it shows 5 drivers 3 of which are not digitally signed:
- NTIDrvr.sys
- UBHelper.sys
- ASAPI64.sys

I have tried uninstalling the device and rebooting several times but each time the drivers same problem exists.
I have also tried to press F8 on startup but this does literally nothing (doesn't even open up a menu).
I have run the device troubleshooter but it finds no problems.
I have tried to update the drivers but they are all up to date.
I have updated windows.
I have run the Microsoft Fix It tool which found no problems.

Really I don't know what else to try...

Any suggestions would be greatly appreciated.

Question Info

Last updated July 3, 2019 Views 3,054 Applies to:

Try following the steps under "Windows 7 or Windows Vista" in the following MS KB article:

These steps, to remove the UpperFilters and LowerFilters values, if they exist, at the named registry key may help.

Create a System Restore Point beforehand and restart the computer afterward.

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