Realtek High Definition Audio Driver for HP z230

[Sfor]

I was able to get the sound card working using drivers from HP z220. But, there is a problem with PC speaker sound. It works in general. Memtest is able to generate sounds, all right. But in Windows XP x32, Windows 7 x3 and Windows 7 x64, PC speaker does not work.

A bit of information, first. HP z class workstations are equipped with a speaker. It is able to generate PC speaker sounds, and in the same time it is the sound card speaker. In case of z220, I had the same problem. Fortunately I found Realtek drivers able to make PC speaker work correctly.

According to my investigation, the PC speaker works by connecting rogrammable Interval Timer (PIT) output to a speaker. The problem with HP z workstations is, the same speaker is used for both PC sounds and sound card output. Apparently the sound mixing is done by the Realtek High Definition Audio Driver. So it depends on driver, how the output mixing is done. While I was able to get driver with correct mixing profile for z220 in Windows XP, the same driver package was unable to do the same for both Windows 7 32 and 64 bit. So I failed to get audible sounds from Beep XP driver in Windows 7 on z220. On the other hand, drivers available for HP z210 are mixing PC speaker with all three systems XPx32 7x32 and 7x64.

All three HP workstations (z 210, z220, z230) are equipped with sound cards from the same series of Realtek High Definition Audio. The difference is, the support for Windows XP was removed along the way. Another observation shows the tendency to remove PC speaker mixing function from newer versions of Windows 7 drivers.

Is it possible to tweak the available driver packages to make the PC speaker available? It seems, the HP z workstation build is somewhat special.

There must be something in the HP released drivers for z workstations, what makes the PC speaker sound mixing working.

 

I was able to to get XP drivers for z230 for  i7-4770 HD 4600 graphics, and Intel Ethernet I217-LM network. The only missing is a "perfectly" working sound driver.