N-ai facut bine ca ai instalat driverele de pe cd-urile cu care vin componentele. Acele drivere sunt din momentul in care a fost lansat componente respectiva, nefiind actualizata. Cel mai probabil asta e problema, insa nu inteleg de ce ai facut trecerea de la windows 10 la windows 7. Posibil sa se rezolve daca reinstalezi fiecare driver in parte manual, de pe site-ul producatorului, sau printr-un simplu update a windows-ului prin serviciul Windows Update. Daca nu-i dai de capat, introarce-te la windows 10.
De la generatia de procesoare 7 in sus (Intel sau AMD), Microsoft nu mai suporta decat Windows 10. Procesorul i5-7400 este generatia 7 astfel ca este recomandat Windows 10.
De la Microsoft:
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We recommend that you upgrade Windows Server 2012 R2-based and Windows Server 2008 R2-based computers to Windows Server 2016, and Windows 8.1-based and Window 7-based computers to Windows 10 if those computers have a processor that is from any of the following generations:
Intel seventh (7th)-generation "Intel Core" processor or a later generation
AMD seventh (7th)-generation ("Bristol Ridge") processor or a later generation
Qualcomm "8996" processor or a later generation
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