Hello Tan,
I would try uninstalling the student version and reinstalling. It should work right away.
I never tried running LS-DYNA outside Ansys Workbench with the student version.
With a commercial version, to run LS-DYNA, you only need the LS-DYNA solver and LS-RUN. You can download the solvers here:
https://lsdyna.ansys.com/downloader-filter/
username: user
password: computer
I contacted a colleague in installation and he said the following about your error message:
"the key error message is "System clock has been set back.". You should not change OS system clock or date.
Please refer to https://www.geoslope.support/kb/article/97-error-88-309-geostudio-system-clock-has-been-set-back/ . Hope it could work. Or reimage the OS and reinstall LS-DYNA student.
Let me know if this helps or not.
Reno.