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Asus U303L notebook does not show maintenance when it is turned on
It was suspected that the resistor was leaking. The R2014 resistor was tested by 10K and 100K in turn. The voltage of HDP was different, which ruled out the problem of CPU. It was caused by the leakage of R4521 resistor. Remove the motherboard, wash R2014 with washing water, and the boot is normal.