Computer Accessibility: Often we end up opening multiple tabs in our internet browser. There is an easy way to switch from one tab to any other tab by using Ctrl+<Tab Number>.

For eg. If u have Quora on Tab 1,Google on Tab 2 and Dropbox on Tab 3 and you are currenty using Quora on Tab 1 then to navigate to Dropbox use Ctrl+3 and voila,you are there in your Dropbox tab without dragging your fingers along the mouse. (*works in Chrome and Firefox,not supported in Explorer,did not try the rest)

Recovering data not showing in pendrive (on Windows) but using space due to virus: Best way is to use Linux and your content shows up.

But in Windows,first check if the files are hidden or not. If not then openCommand Prompt using Win Logo+R in keyboard.

Then type: attrib -h -r -s /s /d e:\*.*    and press enter

Note in this case the Drive of the flash drive was E.

Open the flash drive again and all your contents are there. Be happy :)