Você provavelmente pressionou o F12 na inicialização do computador quando o logotipo da Dell apareceu.
Offline diagnostics
Dell devices come with pre-boot diagnostics to diagnose hardware issues and capture error codes. This set of diagnostics runs before Microsoft Windows starts, so you can diagnose hardware issues without a working operating system. The initial scan lasts a few minutes and checks the system memory(RAM), hard disk drive, processor and several other hardware components for errors.
Refer to the Dell knowledge-base article Resolve hardware issues using ePSA or PSA diagnostics and guide to error codes for more information.
Dell Pre-boot System Assessment or enhanced Pre-boot System Assessment (PSA or ePSA)
To initialize the Dell PSA or ePSA diagnostics:
- Restart your computer.
- When the Dell logo appears, press F12 key on the keyboard several times to open the One-time Boot menu.
- Use the down arrow key on the keyboard to select Diagnostics and press the Enter key.
- Follow the on-screen prompts and answer them appropriately to complete the assessment.
- Write down any error codes listed
- Use the Dell Interactive Support Agent (English only) to get information about ePSA or PSA diagnostic error codes.
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Além disso, existem outras combinações de teclas ou teclas de atalho que podem ser pressionadas inadvertidamente, o que pode fazer com que o dispositivo inicialize no opções Dell ePSA ou PSA Diagnostics .
2. Using the PSA Diagnostics
How to Enter a Notebook Computer Diagnostics
Notebook systems:
You can hold in the Fn key and the power button to boot into the diagnostics.
Alternatively you can press the mute button while powering on one of our E-series notebooks to boot to the diagnostics as well.
Or you can tap the F12 key at the Dell splash screen on start-up.
and choose Diagnostics from the menu.
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