Hi @11Mchs,
Welcome to the HP Support Community!
Thanks for reaching out about your query regarding the light on the power button not switching on!
We're thrilled to have the opportunity to assist you and provide a solution
Could you please share which product you are using, any sensitive information like your HP unit's serial number or product number please share it with us via private message!
To access your private messages, simply click the private message icon on the upper right corner of your HP Support Community profile, next to your profile name.
You can use this link as well:
Private Messages - HP Support Community
Now, let's dive into the issue! Could you please elaborate on what's happening with your device?
Is it just the light on the power button or is the device itself is not powering on? The more details you provide, the better we'll understand the problem and the faster we can resolve it!
We're all ears!
Best regards,