VideoAccessibilityx64 error is posted during JAWS install.
Use the command line /type repair on the JAWS installer to repair the installed copy of JAWS thus.
PathToJAWSPackage.exe /type repair
If the repair does not work it may be worth checking the video card driver is properly installed, if it is not you will need to install the drivers first then run the JAWS repair.
If the video card drivers are sound you can install Magic 14 whcih has been observed to fix this problem. Download from:
https://www.freedomscientific.com/Downloads/MAGic
Once you have satisfied the fix works you can uninstall Magic but leave shared components installed.
Further information
https://support.freedomscientific.com/Support/TechnicalSupport/Bulletin/1768