Recovering a Dell server when the admin or maintenance partition is corrupted is always a headache. Once the iDRAC or LifeCycle Controller stops responding, you lose most of the remote management tools you usually rely on. In that situation the only way forward is to run hardware diagnostics directly through the LifeCycle Controller after boot. A clear step-by-step guide is available at https://www.servers.com/support/knowledge/dedicated-servers/how-to-perform-hardware-diagnostics-of-a-server-with-i-drac-life-cycle-controller , and it walks you through tests for memory, storage, and other components. I’ve used these checks before to confirm whether the issue was software or hardware, and it saved me from reinstalling the OS unnecessarily. If the diagnostics pass, you know the hardware is solid and can focus on rebuilding the partition instead of swapping parts.