It's possible that the error is caused by lack security rights or incompatibility between the installer and the operating system. In this case, I advise using the new ISO file from the official website. Download the ISO, mount it with a virtual CD/DVD and then start the installation again. If it's not working, then you should use only the official drivers as having unsupported drivers on your computer could cause system instability. Use Dell Support to download the original drivers available for your computer.