Compaq Presario CQ61 shows only black screen, and the Num Lock and Caps Lock are blinking constantly
Product: Presario CQ61
Operating System: Microsoft Windows 10 (64-bit)
A couple days ago I was on my laptop, and the screen went blank, and pressing any key did nothing. So I pressed the power button until laptop turned off.
Then I pressed the power button to turn laptop back on. I heard the cd/dvd drive spin, and the fan spin, but all i got was a black screen, and the Num Lock and Caps Lock lights kept blinking. The Num and Caps lights continue to blink, with a couple second pause between blinks, but they never stop blinking as I read they should to show a code by number of blinks. They just keep blinking until I turn the laptop off.
I bought the laptop in 2010. Do you think the CMOS battery is old? If I have to replace the CMOS battery, will it erase all my files, programs, pictures, etc? Should I try to blast dust out of the fan cooling vents?
I have read your post and understand that your Compaq Presario CQ61 displays a black screen and is not booting. I am happy to help you resolve this issue. First, please perform a hard reset. Once that is complete, please follow the steps in these documents: