Quick Fix Blog
Windows Server 2008 startup error after installing dvd or cdrom rw software
Tuesday 22nd July 2008 2:32 PM
You've been running your Windows Server 2008 without problems and now you get the following error after installing software to manage your DVD ROM or CDRW.
Windows Failed to load, c: windows system32 drivers pxhlpa64.sys status 0xc000428
Windows may or may not actually fail to load, it depends whose software you were loading at the time, this time it happened to be Roxio DigitalMediaPlus with Sonic software, it came with a CDRW/DVD ROM drive purchased for a HP DL380 server.
The main problem with this issue is the fact that you no longer have a cdrom drive at all.
I found that dropping to a dos prompt on boot and manually renaming the offending file got me at least in to windows.
The file is C:windows system32 drivers pxhlpa64.sys - rename it to pxhlpa64.old - you can probably just delete it but that's your choice.
Once in Windows you will need to start the registry editor with START - RUN and REGEDT32
Navigate to the following key.
My Computer - HKey_Local_Machine - System - CurrentControlSet - Control - Class
Under CLASS select the {4D36E965-E325-11CE-BFC1-08002BE10318} key.
In there you should now delete both the UpperFilters and LowerFilters keys. (UpperFilters may not exist, depends what software did this to you)
Exit registry editer and reboot.
That should now work, find alternative software for your DVD/CDRW !
As with all matters concerning the Registry and deleting files used by windows, follow this basic advice, Save the registry before making changes and always opt for renaming a file instead of deleting it, just in case - you can always delete it later when you know for sure it won't cause a problem.
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