To restore sound in Windows 7, first check your volume settings by clicking the speaker icon in the system tray and ensuring the volume is turned up and not muted. If that doesn’t work, right-click the speaker icon and select "Playback devices" to ensure your output device is set as the default. You can also update your audio drivers by going to Device Manager, expanding "Sound, video and game controllers," right-clicking your audio device, and selecting "Update Driver Software." If issues persist, running the Windows Sound Troubleshooter can help identify and fix the problem.
If your restore requires a windows disk then you cannot restore without one. Most do not require a windows CD. Most include the windows files in the manufacturer restore.
C:\WINDOWS\system32\Restore
System Restore.
You can get a system restore in Windows 10 in a few ways: reset to a factory settings, from restore pint, from system image, restore system files with sfcscannow and so on.
To restore it you have to delete your system32 files.
System Restore
restore
No.
If you have windows vista, click on start and type 'system restore' in the search box down the bottom and click on system restore when it appears If you have xp, click on start, All programs, Accessories, System Tools and then system restore. I'm not sure about windows 7. (Any version of windows which is 98 or under will not have system restore.) Hope this helps!
THe backup and the restore wizards
Use the windows restore software automatically included in the packaging.
Which utility is used to locally update or restore the system ROM from within Windows