+ 0 Votes Well provided that you have not reloaded the system OH Smeg Updated - 2 years ago You can go to the Control Panel switch it to Classic View and then open the Sounds & Audio Devices, When that window opens left click on the Audio Tab and from the Drop Down List Select Realtech AC97. Just one thing here Sound Max isn't Realtech and they are not interchangeable drivers so if you have reloaded the system try using the Driver on the HP Web Site listed as SoundMax Integrated Digital Audio It's a different driver to the AC97 Driver. However if you have the Realtech AC97 Audio Device and you have reloaded the system and connected it to the Windows Update Servers there is no way to get the Realtech AC97 Drivers to actually work. This is because Realtech doesn't submit their Drivers to M$ for Digital Signing and once you connect to the Windows Update Servers it's Impossible to make any Realtech Audio Device work. It's to do with the first 2 Pieces of software that are downloaded and Installed before Windows Checks for available Patches/Service Packs and so on. To find out which Audio Device you actually have you can use Unknown Device Identifier available as Shareware here http://www.fileheap.com/software-unknown-device-identifier-download-34861.html Col + 0 Votes Reponse To Answer julianvb 2 years ago Hi, Everyone, Good news. I was peviously confused by Windows XP's prompting me to install the Realtek AC97 sound card every time I powered up the computer. So I thought my sound card was a Realtek AC97. Yesterday while checking my HP Compaq d530 computer's documentation once more, I discovered that the sound card is the SoundMAx AC97 Integrated Digital Audio. This information enabled me to locate the correct driver online, which turned out to HP's SP28818 file. Even though it's not on Microsoft's compatible list, I was able to install it successfully. Now my computer has regained its sound. Thank you all for your generous and helpful advice. Julianvb + 0 Votes try a couple of things.... databaseben 2 years ago you may have another sound driver that is interfering with realtek driver. try running "autoruns" and delete "any and all" drivers and system files pertaining to the "sound" for your system, including realtek. you may also want to scour the registry for anything related to realtek and or any other sound driver you discover, and remove those keys. also, if you installed any freeware pertaining to music, like itunes, etc..., i would temporarily uninstall them. then reboot then go to the computers home site or the home site for your motherboard to download "their" version of sound drivers for your system.