Missing or hidden scroll bars View The Full Article To correct this issue follow the instructions for the OS you are using. In Windows 7 Set View By settings to Large or Small Icons1. Go to Control Panel.2. Select Personalization.3. Under Personalization select Window colors.4. Click on the Item dropdown and select Scrollbar.5. Change the Size to a smaller number 15, 17, or 19 should work depending on your computer settings.6. Click OK, the click Save Changes.For MAC Launch System Preferences and head over to General. Select the Always radio button below Show scroll bars. This will make sure the scroll bars are permanently visible. Optional step: Click on Show All and select Trackpad. From there, uncheck When using gestures to scroll or navigate, move content in the direction of finger movement. This should make the scrollbars scroll the right way.