Put this clip right on the frame where an error dialog pops up, then follow it with the classic error sound effect for a second failed attempt. For a longer bit, repeat that same order each time the on-screen attempt fails again.
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This clip is a short Windows warning chime, about a second and a half long, with the clean digital alert tone used for system prompts. It feels instantly tense and familiar, like something on your computer just went wrong, which makes even a small mistake sound like an official problem that needs attention right now.