Here it is, try that out:First, uninstall it Boot in safe mode and press ESC key when you see on bottom line of display: "Press ESC to cancel loading SPTD.sys". This will abort loading of SPTD layer. Open registry editor (run regedit) and browse to the following registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Servic es\sptdChange the value "Start" (DWORD) to 4 rebootGo in the device managerGo to viewClick on show hidden devicesuninstall/ delete those 3 devices -> Generic DvD drive, Scsi controler, SPTD (found under non plug and play drivers)Go to c:\windows\system32\drivers\Delete the files you will find that looks like this axxxbus.sys, axxxscsi.sys, dxxxbus.sys, dxxxprt.sys (xxx are 3 numbers depending on the version you had) and SPTD.sysRebootIf you have any problems while doing it, let me know