Hi Mohammed,
Install the device using Windows XP compatibility mode and check. Refer to the following link.
Make older programs run in this version of Windows. http://windows.microsoft.com/en-us/windows7/Make-older-programs-run-in-this-version-of-Windows
Model Name: 1200 UB Plus.
http://www.mustek.com.tw/Download/driv_scanr/europe/1200ubplus.html
Hope this helps.