HP G72 will not power on

[Johng72]

Hi

When I switch my laptop on nothing happens. There is no sound or display. No lights come on, even the on / off switch light does not come on. The charging light does however work. I have tried a hard battery reset  but with no success.

This problem occurred straight after I cleaned the dust from the fan. The disassembly / reassembly appeared to go well, but clearly something bad has happened.

My next step could be to strip the laptop down again, then carefully reassemble it, but I would appreciate any suggestions as to what the problem could be, and how I could fix it.

Many thanks!

John

[Chimney_83]

Thanks for the post and Welcome to HP Forums @Johng72,

I understand that you are facing an issue with your computer not booting. Don't worry, I will be glad to help you. 

Kudos to you for trying to troubleshoot the issue on your own.

Have you made any changes on your computer? (Hardware or Software recently)

HP Support on Forums is limited to Windows. (Linux is not supported.)

Recommend you to do a power reset again. Click here for the article. 

Please disconnect any devices connected to your computer. 

If you have any USB or DVD in the computer, please disconnect it.

Perform a power reset on the computer. Click here for assistance. 

Disconnect the adapter, remove the battery (if it can be removed)

Hold down the power button for 30 seconds to drain the static in the computer. 

Connect the adapter and battery to the computer. 

Turn the computer ON and keep tapping F2 or ESC repeatedly on startup. 

This should get you to a Startup Menu and from there you can select System Diagnostics. 

Please select system diagnostics and run a system test. 

If the test fails, please contact our phone support for the service options.

If you do not get any HP logo or the startup menu or no lights on the computer. 

Please leave the battery out and try to power the computer On only with the power adapter. 

If the issue persists, please contact our phone support for the service options. 

HP Notebook PCs - Computer Does Not Start (Windows 7, Vista, XP)

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Please follow the procedure mentioned below to contact our phone support. 

• Open link:  www.hp.com/contacthp/
• Enter Product number or select to auto detect
• Scroll down to "Still need help? Complete the form to select your contact options"
• Scroll down and click on HP contact options - click on Get phone number.

Keep me posted. 

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Please do post your technical queries on our Forums for assistance. 

Good Luck.