电源开关不起作用

@oldman40
Thank you for posting on the HP Support Community.

I understand you are in need of support, As it’s a hardware and parts related issue, I would request you to contact our Support and our Support Engineers should be able to check the available service options for your 
HP Support can be reached by clicking on the following link:

Click on this link – www.hp.com/contacthp/
Select the product type.
Enter the serial number of your device or select let HP detect your product option.
Select the country from the drop-down.
You should see the HP support number or Chat option listed

Please feel free to contact us here anytime you need any further assistance. Please click “Accept as Solution” if you feel my post solved your issue, it will help others find the solution.