Acer Aspire E5-571G

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Fig. 1

Diagnosing/disabling discrete GPU

Diagnosing/disabling discrete GPU[edit | edit source]

Problem Solution

Disabling discrete GPU

  • The machine is equiped with Compal LA-B991P board.

Tie to ground pin 4 of U2001; can short R2017 pads.

  • See Fig. 1.

This will keep GPU in reset mode; PLTRST_VGA# remains always active (0V). Nvidia graphics is no longer visible in Device Manager. The chip (U2001) could be removed too.

  • This way you can diagnose Nvidia discrete graphics issue.

Correct solution implies GPU replacement.

  • If the client decides to use the laptop with only Intel integrated graphics, then you can remove many components from GPU area: like PU1001/1201, PQ1201-04, etc.

Remove VRAMs and GPU if like too. You can also save all 10uF/25V capacitors (0805 size), 6 in total. All these components (apart of GPU), can be reused in other repairs.