All your minidump files indicate it is the Realtek WiFi drivers causing your PC to crash.
Go to the support page for your PC on the manufacturers website, then from there, download and manually re-install (not update) the version of Realtek WiFI (WLAN) drivers they provide.
If you have any difficulty locating that support page, click your Start Button, then just type msinfo and press Enter, please provide a screenshot of the resulting System Information window.