Repair your Windows with the Media Creation Tool (Windows.iso)

If you have problems with your Windows, an easy fix that will keep all your installed apps, programmers and files is to repair (refresh/reset/update) your installed Windows using the official media creation tool. It is like a re-installation of Windows, so it can solve most problems, but you don't loss anything you already have.

Just go to https://www.microsoft.com/en-us/software-download/windows10, download the tool, run it and follow the GUI instructions; remember to choose "Upgrade this PC now (Download and install updates)", and that is it.
For detailed steps of this repairing process, please refer to:
https://www.tenforums.com/tutorials/16397-repair-install-windows-10-place-upgrade.html

Other problems:
If you see the error "Setup couldn’t start properly, Please reboot your PC and run set up again", just rename the folders "$Windows.~BT", "$Windows.~WS." and "Windows.old", in your system drive, and try again, see http://www.thewindowsclub.com/setup-couldnt-start-properly-windows-10

Tabula --- Free tool to extract tables in PDF as CSV or Microsoft Excel spreadsheet!

"Tabula was created by journalists for journalists and anyone else working with data locked away in PDFs. Tabula will always be free and open source."

Want to copy a table in a PDF document and save it as a CSV file or Excel spreadsheet? Just try the free and open source tool Tabula! It has a very simple and nice user interface (clicking, dragging to draw the selecting box) and works well for most PDF files containing data tables (only text-based PDFs, not scanned documents, though). Tabula is available on Mac, Windows (no installation is needed, just unzip and run) and Linux.
Official Site: http://tabula.technology/
Source Code: https://github.com/tabulapdf/tabula
Links:
https://ropensci.org/blog/blog/2017/04/18/tabulizer (tabulizer: R bindings to the tabula-java library for processing PDF tables programmatically)