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compaq presario cq62 not boot

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Last Modified: 2014-08-08
Hello,

I have a Compaq Presario CQ62-220US notebook.

When I press the power button, there is a black screen, F12 key is orange and the caps key blinks. No messages or anything on screen.

What is going on??

thanks
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here my laptop troubleshooting guide, i hope it helps you :
- remove all external devices
-you can disable devices from BIOS to test (sound, lan, etc..)
- if no display - test with an external monitor
- test if it runs from battery alone, or from AC alone
- test also with a known good battery !
***some laptops have a reset button - if you have one use it!
- remove battery and AC adaptor, hold power button for 20 sec, connect AC and reboot --> any display ? if NO -->
- disconnect all disk and cd drives, battery , and other cards and peripherals, leave only 1 ram stick
- boot -->any display ?
-if you can access the bios battery, remove the battery, AC, and bios battery for a minute to reset the bios
or test it, it should read 3 V
*** you can test the disk on another pc, if you like !

===>>you can test if the mobo works outside the casing, connected to power and external video  !
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Commented:
What options do you have if you press F8 while it's booting.
You may have to repeat pressing F8 while booting.

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