Question Should I enable Hardware Virtualization?

[Countess_C]

I had a problem with a CD-ROM driver (PxHlpa64.sys) that made my computer bluescreen a couple of times a month, so I disabled it from starting and now the optical drive isn't recognised by the system. I tried this tip I read on tenforums:

Here’s what I did:

Go to C:\Windows\System32\drivers, rename PxHlpa64.sys to PxHlpa64.sys.old

Go to Registry Editor, find HKEY_LOCAL_MACHINE > System > CurrentControlSet > Control > Class

Find 4D36E965-E325-11CE-BFC1-08002BE10318
Delete LowerFilters and/or UpperFilters (I only had LowerFilters)

If you want to play safe, backup this registry key first.

More details on this procedure here:
How to Delete the UpperFilters and LowerFilters Values (lifewire.com)

Restart.

Turn on Memory Integrity and restart.

Now my DVD burner works.
(If you just rename PxHlpa64.sys you can turn on Memory Integrity but CD/DVD will not work.)

I renamed the driver to PxHlpa64.sys.old and deleted the LowerFilters, but I can't turn on Memory Integrity because I don't find it as an option in Windows Security. I googled and read that I would have to make changes in the BIOS to enable Hardware Virtualisation first. Do I really have to do that? Does it harm anything if I don't?

The optical drive seems to work fine now.

 

[Colif]

Memory integrity is part of core isolation - https://support.microsoft.com/en-us...security-afa11526-de57-b1c5-599f-3a4c6a61c5e2

this shows how to enable it: https://support.microsoft.com/en-us...s-11-pcs-c5578302-6e43-4b4b-a449-8ced115f58e1

you could have asked on tenforums, they would have explained why it was necessary. I am not sure why its being turned on. its mostly used for virtual machines.

 

[Countess_C]

Memory integrity is part of core isolation - https://support.microsoft.com/en-us...security-afa11526-de57-b1c5-599f-3a4c6a61c5e2

this shows how to enable it: https://support.microsoft.com/en-us...s-11-pcs-c5578302-6e43-4b4b-a449-8ced115f58e1

you could have asked on tenforums, they would have explained why it was necessary. I am not sure why its being turned on. its mostly used for virtual machines.

Yeah, I read about that but didn't understand why I or if I should.

Oh, the thread on tenforums is called "PxHlpa64.sys preventing core isolation", so I guess that's why Memory integrity was mentioned. And deleting/renaming the culprit driver made the optical drive stop working as a side effect. So the Memory integrity advice didn't have anything to do with the optical drive. So I guess all is well. 😊

 

[Colif]

https://kb.corel.com/en/129332 << article on the problem, the driver is made by Roxio. The advice here might help.

 

[Countess_C]

https://kb.corel.com/en/129332 << article on the problem, the driver is made by Roxio. The advice here might help.

Thanks! I shall look into it. Hopefully the disc burning program I use (CDBurnerXP) doesn't use PxHlpa64.sys.

 

[Colif]

short search suggests that it does.

 

[Countess_C]

short search suggests that it does.

I have tested it now. Burned a couple of songs on a CD using CDBurnerXP and it worked just fine, and it plays with no problems. 😀