Hi,

You mean System Sounds :
How to Change the Event Sound Effects in Windows 7
http://www.sevenforums.com/tutorials/285-sounds-change.html
Create Custom Sound Schemes In Windows 7 Using iFX Seven Sound Creator
http://www.intowindows.com/create-custom-sound-schemes-in-windows-7-using-ifx-seven-sound-creator/
iFX Seven Sound Creator - corrected download link for the above.
http://www.ifxsound.net/APPLICATIONS/seven.html
-----------------------------------------------------------------------------

Download Windows 7 Build 7048 Sounds (13 Different Sound Schemes) <-- good writeup
but the download link is broken
http://www.intowindows.com/download-windows-7-build-7048-sounds-13-different-sound-schemes/
Download Windows 7 Build 7048 Icons & Sound Schemes <-- download here works
http://webtrickz.com/download-windows-7-build-7048-icons-sound-schemes/
Use your favorite Search Engine to find other custom sounds, and many themes include sounds.
Hope this helps.

Windows 7 All in One ISO (AIO) Download 32 Bit and 64 Bit latest ISO (from the official source). This is bootable ISO for All in one Windows 7, using which any edition can be installed. Download this app from Microsoft Store for Windows 10, Windows 8.1. See screenshots, read the latest customer reviews, and compare ratings for Collection of Windows Startup Sounds.

Rob Brown - MS MVP - Windows Desktop Experience : Bicycle - Mark Twain said it right.

Just click the free All Free Sound Recorder download button at the top left of the page. Clicking this link will start the installer to download All Free Sound Recorder free for Windows. Will this All Free Sound Recorder download work on Windows? The free All Free Sound Recorder download for PC works on most current Windows.
Windows 7 Download - free Windows 7 software downloads, free download - Free Windows7 Download.
These are just windows XP sounds ripped from C: Windows Media Folder in WinXPSP1 for other MICROSOFT WINDOWS OPERATING SYSTEMS ONLY. All files from Microsoft and are again, only for microsoft windows operating systems.

The recently leaked Windows 10 build 10074 comes with a new set of sounds. Interested users can try these sounds right now. Here you go.

RECOMMENDED: Click here to fix Windows errors and optimize system performance

All Windows 7 Sounds Download

Almost every Windows version had its own, exclusive sounds. From one version to another, Windows sounds became more melodious. Windows 10 continues this tradition. If you are interested in trying them, download the following archive. It includes all 76 sound files from the leaked Windows 10 build 10074. There are lots of new sounds which the operating system plays for various events such as calendar events, new email notification, unlocking and locking your Windows session and many other events.

To get these sounds, click the following link:

Windows 7 Sounds Download Wav

Download Windows Sounds

Listen to them and tell us what you think about these sounds. Do you like them or not?

Windows 7 Sounds Download Free

RECOMMENDED: Click here to fix Windows errors and optimize system performance