My name is Uttam from Dell Social Media Outreach Team. In response to query I assume that its about Internet explorer toolbar.
On the new system its possible you have newer version of Internet explorer.
1. Enable the Menu bar on the top of the browser and check for icon size.
2. Or, on top right of Internet Explorer -> go to Page -> try resetting both 'Zoom' and 'text size'
3. Or, press and hold control key and same time scroll up and down to see the difference.