Maybe the modem is the reason for the long download time. If the modem's activity light is not blinking, that is one more reason to restart the modem.
If you are wondering "how to fix really slow internet," one of the easiest ways is to restart the modem is by unplugging the power cord from the power outlet and waiting for a couple of minutes. After that plug it back in the outlet and the Internet speed should not be slow any longer.
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