My HPLC autosampler is not showing any peaks in the chromatogram how can I fix this?

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Desh Deepak A P Singh Chauhan

Check the instrument settings: Verify that the instrument parameters, such as the flow rate, gradient, detector wavelength, and temperature are set correctly for the analysis.

Clean the autosampler

Check the T. TUBES for further detection. Is it possible to note the type of sample you are using on it. Change parameters and re-run.

I knew it's very basic but most of the times it works