I have turned off AVG anti-virus software and reinstall the HitFilm express, but the issue still exists.
My system is as follows:
windows 8.1 64 bit
Intel i7-3612QM CPU @2.10GHz
Video card: Intel HD Graphics 4000(driver 2013)
I cannot upgrade to the latest version of graphics card due to compatible issues reported by the installer.
What else I can do to fix it issue?