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- Notebooks Archive
- My HP Probook 4540s is not turning on, the power buttons jus...

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11-16-2014 06:28 AM
11-19-2014 06:22 AM
Dear Customer,
Welcome and Thank you for posting your query on HP Support Forum
It looks like you are not able to Power ON the Notebook and wanted to fix the issue
Please perform below shown steps to find out if this is a software or hardware issue:
1. Remove all Peripherals and Cables, Disconnect them and try to Power ON the Unit
2. Check for LED Light Status and ensure Power Button spring action is normal
3. Swap with a known good Power Cord and Power Adapter
4. Incase no Adapter is available, Check if the Power Adapter is slightly warm
Note: This will give us a hint that the Power Adapter might be fine
5. Do you know if the Notebook was in Battery or Power Adapter Mode when you used it for the last time
Note: Ensure there is no liquid spillage or Power Outage
6. Check if the AC Adapter Port is loose/broken
Note: If the Notebook doesn't Power ON even with a known good Power Adapter this confirms the Hardware fault with System Board or the DC Power Circuit
Hope this helps, for any further queries reply to the post and feel free to join us again
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Thank You,
K N R K
Although I am an HP employee, I am speaking for myself and not for HP
