Try mo mag live Linux Mint live usb. Para lang ma test mo kung may problema yung hardware. Kung magugustuhan mo sya, install mo na din.
Hindi na rin kse safe Win7.
ganyan din ngyari sa pc ko, galing windows10, nagwindows 7 ako, ang ginawa ko is nagdownload ko ng advance pc repair yung ***** version, tpos yun scan ko lang, then fix all , reboot after that okey na lahat, bumilis pa pc ko...
magdownload ka ng driver booster pro, yung cr@ck version para maupdate mo lahat ng drivers na asayo, meron ding audio drivers don na nirerecommend na iinstall, try mo yun realtek ata yun