Issue: Its seen that computer having a samsung hard drive of 320 GB and 500 GB will give black screen with a cursor at the top left corner and it wont boot.
The reason behind this is these hard drives contains a scanner inside them which periodically scans the hard drive to check for error and tries to recover them.
Resolution: Enter the Boot device menu(By pressing the F12 or F9 key on the manufacturer logo).
Change the Boot Device
Select HARD DRIVE as the 1st boot priority and press enter. The system may or may not boot.
If the system boots, go to : http://support.dell.com/support/downloads/download.aspx?c=us&l=en&s=gen&releaseid=R180581&SystemID=INSP_DSKTP_D530S&servicetag=&os=WLH&osl=en&deviceid=13763&devlib=0&typecnt=0&vercnt=1&catid=-1&impid=-1&formatcnt=2&libid=41&fileid=246131
Here you will find a patch which will delete/disable the scanner.
If the system wont boot even after selecting the Hard drive from Boot menu., wait till the scan completes and then run this patch.
Do not Reinstall OS or replace your hard drive for this issue.