Hi, Skyl1,
Welcome to Sony Community!
PCG-71318L is actually the chassis number. Visit this link to get the exact model name of your Sony Vaio laptop: https://us.en.kb.sony.com/app/answers/detail/a_id/38141/. May we also have the current operating system of your unit?
In addition to luccwb, you may run Vaio Update and Windows Update to download and install the necessary drivers and software for the laptop.
Regards,
Vincent
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