Installed Windows 7 64-bit on an old Novatech / Clevo laptop, made when Vista was out.
Windows automatically installed a driver, but the integrated microphone did not work.
Installed the latest Realtek audio codec driver, which made the microphone work, but now
the sound was distorted, like speaking into a fan. Reducing the quality from DVD 24-bit to
CD 16-bit changed the distortion into lots of crackles, pops, and other static noises.
Tried an old official W7 driver from the Clevo site, but still the same problem. Dug out the original
driver CD with R1.91 drivers, but the setup.exe was designed for Vista and refused to install.
Went into Device Manager, chose Update Driver on the 'High Definition Audio Device' and pointed
it to the Vista64 folder within the Realtek drivers, it installed, and everything worked perfectly.