Does upgrading RAM void your warranty?

No, it almost never does — as long as you don’t break anything. Prebuilt desktops like HP Pavilions usually have accessible RAM slots and clearly state that user-upgradeable parts are fine. The real risk is physical damage like cracked traces or static discharge, which isn’t a warranty issue. Always double-check your specific model’s warranty terms, but don’t let fear stop a ten-minute upgrade.