15 f272wm windows 10 problems

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i recentlly bought chap windows 10 pro key off ebay and upgraded my pc and hear comes the problems my pc was reset by factory 4 times do to firmware issues now it seems like my audio driver realtek is horriable cutting out so bad its comes to slow stand still still when the os is fine evan on logitec head phones my pc speakers dont do it rarly when i uinstall the driver and revert back to high def one that came with ten no problems occur so whats going on hear i had my laptop downgraded once to windows 7 and had no problem i evan had 8 and alsomt bought the os but i decided to reset my pc back to factory with clean install and nothing keept because i dont have anything accept paying online stuff with my laptop so why is my audio doing this i evan told tech on phone 4 diffrent times it was and nothing was found either when i use the high def buz it works fine so why would hp use such a rubish card driver so i bought usb sound card me reverting to having to buy one anything better then my onboard sound especially from 2 year old laptop and when it orginally use to lock up and freeze sevral times on me it wasent the hard drive but when powering off the laptop it sound like th drive and i know computer noise sounds because i use to build desktop and the memory door was horriable to get complletlly off and painfull to for single stick off ram to upgrade so yeah so the question is why and why are people having teh sam eissue with realtek. out there i had no problems when it had windows 7 pro on it