if the Dell has S-mode you need to permanently turn it off. does it meet minimum system requirements?
https://turbotax.intuit.com/personal-taxes/cd-download/tta-system-requirements/
have you tried turning off any antivirus software/firewall until installed? do you get an error message?
your final recourse is support
https://ttlc.intuit.com/turbotax-support/en-us/help-article/account-management/contact-turbotax/L2y9...
