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.
How to use Check Disk. The Check Disk window is very simple. Check both options, click on the Start button and the error-checking process will start. If the disk you want to check is used by an application or by the operating system, you will receive a warning saying that the disk cannot be checked while it's in use. In this case, click on Schedule disk check.