Open your registry and change the value of 'MinAnimate' found in the key below, set the value to '0' for disabled or '1' for enabled. 

If the value doesn't already exist simply create a new string value and name it 'MinAnimate'. 

Key:[HKEY_CURRENT_USER\Control Panel\Desktop]
Value Name: MinAnimate
Data Type: REG_SZ
Data:(0=disable, 1=enable)

 

Back to Windows Tweaks