HDD Low

HDD Low is malicious software, do not install it. Its FAKE and does nothing but try to scam money out of you and steal your credit card details.
If you have installed it, download and run MalwareBytes Anti-Malware, this will completely remove HDD Low and return your computer to normal operation.
If you can't do anything on the computer because of HDD Low, press Ctrl Alt Del, right click on HDD Low, go to process and then End process.

Dell flashing cursor

Fault - Had a Dell Inspiron 530 in today, that would display the Dell starup screen, but then stop with a flashing cursor in the top left of the screen. Pressing F2 or F12 on startup led to the same flashing cursor.
Repair - one of the ram chips was faulty, replaced and all worked Ok again.