For a dollar you can try a new CMOS battery (how is on the web and I can't tell you exactly because the NV54 was series of a dozen or more models.)
That said, cost to repair is often more than say this one:
https://www.newegg.com/Product/Product.aspx?Item=9SIA6A35CV8466
My laptop will not turn on , the battery charge light is blue, when I try to push the on button , nothing
happens. My laptop is gateway NV54 .

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