Here is the definitive guide on how to download and use the platform without admin rights. The Best Method: Use a Portable Installation
The most effective way to bypass admin prompts is to avoid the installation process entirely. Portable versions of software run directly from a folder without modifying system registries. download origin without admin
Download the version of 7-Zip (which doesn't require installation). Open 7-Zip and "Open Inside" the installer file. Extract the contents to a new folder on your desktop. Here is the definitive guide on how to