Black Candles are bearish lines in candlestick and candlevolume charts. They signify that the closing is lower than opening for that time period.
CHKDSK, short for Check Disk, is a utility that checks the integrity of the files and file structure of your hard disk. I'll walk you through it. I have disk problems and you said I should run CHKDSK. Great.
Created by Anand Khanse. Check Hard Disk for Errors, Health, Bad Sectors in Windows 7 / 8 / 10. From time to time, it is a good practice to check your hard drive (hard disk) for errors using a tool built in to Windows called CHKDSK (for Check Disk). It is important that you keep a watch on your Hard Disk health. How do hard disk errors happen? Other than the CD/DVD drive in your PC or laptop, the hard disk is the only component with moving parts, spinning at speeds up to 7200 revolutions per minute whether you are doing anything on your computer or not.