Hey there, aaaaaadc.

Thanks for dropping by the Community. If you've tried all the troubleshooting steps provided by my colleague and are still having trouble, I would recommend reaching out to our support team for assistance. This will connect you with an agent who can dive into your account and see why you're having these installation errors. Whether it be software or hardware problems. You can Contact Us and we'll get you up and running again. I'm also including a link to our website, in which you can download QuickBooks Desktop directly from there. 

If you have any other questions, feel free to post here any day and anytime. Thanks and have a lovely day.