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What happens when you try and start it up?
Perform the following steps:
-Remove the battery and Power adapter
-Press and hold the power button for 30-45 seconds (with battery and power still removed)
-Insert just the battery and attempt to boot the laptop.
-Insert just the power adapter and attempt to boot the laptop.
Compaq CQ61 Maintenance and Service Guide
Also See: http://www.techsupportforum.com/forums/f108/black-screen-issues-and-troubleshooting-498132.html
Perform the following steps:
-Remove the battery and Power adapter
-Press and hold the power button for 30-45 seconds (with battery and power still removed)
-Insert just the battery and attempt to boot the laptop.
-Insert just the power adapter and attempt to boot the laptop.
Compaq CQ61 Maintenance and Service Guide
Also See: http://www.techsupportforum.com/forums/f108/black-screen-issues-and-troubleshooting-498132.html