We'd need to see a Dxdiag report of his PC; upload it on a site like pastebin.com and link it here.
English
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https://pastebin.com/A7E49Zn7 Here it is, some of it unfortunately generated in polish and I couldn't find a way to do it in english apart from maybe changing the system language
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Edited by Crisidelm: 4/17/2021 12:08:44 PMThe language is not a problem; tell him to make sure that his Windows installation is 100% up-to-date. The report registers failures in updating Windows that may be causing instabilities. Furthermore his video driver is pretty old (should ba from August 2020). Can't he update it?