Disabling the ability to click on My Computer

You can restrict any user to access your system drives if you disable the click feature on My Computer. User will get no changes when he will try to open My Computer.

By editing the windows registry keys, you can disable the click feature on My Computer.
Follow the given steps to disable My Computer setting.

1] First click on Start button then type Regedit in Run option.
2] In registry editor panel search the value 20D04FE0-3AEA-1069-A2D8-08002B30309D
3] May be you will find this value on path HKey_Classes_Root \ CLSID section.
4] Here delete the entire section of this value.
5] Now close the registry editor and restart your computer after any changes to go into effect.