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.
You can use Disk Cleanup and Disk Defragmenter to perform these maintenance tasks. Disk Cleanup. The Disk Cleanup utility helps you free up space on your hard disk by finding files you can safely delete. You can decide which of the files you want to delete. Each version of the Windows operating system requires a slightly different method to use the Disk Cleanup utility.