|If a program is not shown in Remove Programs window, it is hidden by the manufacturer. You must make it visible. This is how:|
Open Regedit and go to HKLM\Software\Microsoft\Windows\CurrentVersion\Uninstall
Under Uninstall on the left pane, there are many entries. These are the entries that appear in Remove Programs window.
Left-click each entry and its contents will appear on the right pane.
If the contents on the right pane include a value named NoRemove with a data of 1, it is not seen in the Remove Programs window.
Now continue left-clicking each entry under Uninstall on the left pane and read the name of the program on the right pane until you find "Samsung Eco Mode".
It must have a NoRemove value with data 1. Make it 0. After reboot ( maybe no need to reboot ), it should appear in Remove Programs window.
If your Win 7 is 64-bit, then you must also look for Samsung Eco Mode in registry HKLM\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall.
Caution: If you are uneasy with Registry Editing, then you may consider getting help from a knowledgeable friend. If you mess with registry, you cannot reboot your computer, let alone upgrade to Windows 8.
In any case, if such a thing happens, you clean-install Windows 8. No problem. In this case, you must install applications and drivers from Samsung web site. Most drivers come with Windows 8 or with Windows Update, by the way.