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Archived This topic has been archived. Information and links in this thread may no longer be available or relevant. If you have a question create a new topic by clicking here and select the appropriate board.

‎08-05-2016 10:24 AM

HP Recommended
Product: Presario CQ56
Operating System: Microsoft Windows 7 (64-bit)

I set my laptop to sleep mode earlier today. Some 6 hours later, when attempting to wake it up, it remained nearly completely silent.

 

Symptoms:

 

The cooling fan starts and keeps running at normal rate -- when the computer heats slightly, the fan rpm increases.

 

Screen does not turn on, but rather remains completely unpowered.

 

CapsLock light is blinking steadily at 3-4 second intervals.

 

WLAN light is red.

 

Hard Drive I/O led is dead.

 

Disk drive is responsive, opens and reads disk on startup.

 

Power button inoperative - only way to shut pc down is via hard reboot.

 

 

Solutions I've tried:

 

Connecting an external monitor: No success, system state unchanged, monitor remains black

 

Hard Reset (holding power button down with no power connected): No success, system state unchanged

 

Inserting Bootable CD on startup:  No success, disc drive reads disc, no effects on system

 

Removing RAM modules: No success, no effect on system operation.

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