After installing Windows 7 or re-installing Windows 7 probably one of the device that hasn't got generic drivers is your sound card, this is especially the case when it comes to Realtek sound cards. Many times people don't have the installation CD-ROM's and other media because they stopped including this media some time in the early 2000's
Realtek High Definition Audio Driver for Windows 7 (32-bit, 64-bit), Vista (32-bit, 64-bit), XP - ThinkPad
File: 8ga116ww.exe
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Realtek HD Audio Driver
File: 0009-32bit_Win7_Win8_Win81_Win10_R282.exe
4dbeb838b2e6650d0b57f0db6eabe0dd8445a144dc64e3b38e3df39be1d41dad
Realtek HD Audio Driver
File: 0009-64bit_Win7_Win8_Win81_Win10_R282.exe
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Driver only (Executable file)
File: 0008-Win7_Win8_Win81_Win10_R282.exe
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Driver only (ZIP file)
File: 0009-Win7_Win8_Win81_Win10_R282.zip
26ba93e835524fc02c6ad59156c4beee2e746a43cf1fda857090c0aa6f7ac336
Realtek High Definition Audio Drivers
File: WDM_R274.exe
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