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‎06-21-2023 02:15 PM

HP Recommended
Product: HP Notebook 15-da1009ne

Just after I replaced my laptop main battery with a new one, and I leave my latptop for hours turned off, it needs the charger as a first spark (plug it in and out even for 1 second) so that my laptop can start up. Then it shows the checksum invalid error (502), then it starts and i can work on the battery for hours normally. If i choose to restart or start it up after few mins of being turned off, the checksum error doesn't show up again and starts up normally on battery. Any help please?

Another side note, not sure if it is a related thing or not, my windows became significally slower than before after that issue in starting up or shutting down!

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