Black screen during startup

I have a HP m9520f I bought a month ago. From time to time, it gives me a black screen when booting. The computer is on, but nothing happens. When I unplug the power cord and plug usually once again, it starts fine the next time. I tried solutions suggested by pressing F8 during startup. But nothing is going on (it started normally without any problem).

The clues and suggestions are appreciated.

Could be an intermittent hardware failure, try to open the housing, cleaning (using canned air) all, remove and reinstall the RAM and check the connections are secure. However, first, check the screen. Is the cable correctly connected at both ends, and the power cable is safe? You could test if it's not for lack of a monitor, if you have a keyboard with a sleep button, to set market and that, if the screen goes black, wait at least 10 minutes until it would have normally received at the logon screen. Then, press the sleep button and see if she falls asleep. Also watch the disk activity; If there is a lot that the operating system is probably start normally.

Tags: HP Desktops

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