Memory Access Violation errors occur due to various reasons. It is suggested to follow the check list which is as below:
a) Open Tally.ini file from Tally folder and edit the Tally.ini and set the following parameters as shown:-
Set Default Company = No
Set User TDL = No
Note: In case you are able to start Tally.ERP 9 after setting the default companies to No, it is suggested to take a backup of the data and re-write the default companies.
b) Check Screen resolution.
Ø Right-click on the Desktop and select Screen resolution
Ø Go to Start > Control Panel > All Control Panel Items > Display > Screen Resolution
Ø Select (recommended)
Ø If the problem persists, set the resolution to 1024*768.
c) DPI Settings to Normal Size (96 DPI)
d) Uninstall the Printer drivers (Start > Settings > Printer & Faxes) and then Reinstall.
e) Delete Tallycfg.tsf(Available inside Tally folder)
f) If user profile is corrupted, create new user and check. Contact system administrator to create new user profile.