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No connection to Mouse or Keyboard, Screen blank.

HP 19 All-in-One PC
Microsoft Windows 8.1 (64-bit)

I've tried the holding the power button down for a certain amount of time and plugging the power cord in and starting the pc to see if it fixed, but it doesn't. Warranty expired. There was a night where the power went out in the house and the power came back on just the screen didn't. The computer comes on, not the keyboard, mouse, or the screen. I don't know if it boots all the way up because I can't see if it has. I don't think it boots because if you wait a while the keyboard and mouse should come on, but it doesn't. Dark Screen, Keyboard and Mouse don't come on. I've even tried to plug in a different mouse and keyboard. I really need a solution.

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No connection to Mouse or Keyboard, Screen blank.

Greetings KjRBLX,

 

Welcome to the forum.

 

I am not an HP employee.

 

Anytime you have a power interruption or power surge to an electronic device connected directly to an AC outlet you run the risk of damaging electronic components. A surge protector may not always prevent damage when this type of event happens.

 

This event may have damaged your external power brick, a critical components on the MB, or fried everything.

 

You really should check with HP Support (I know you are out of warranty) or have a local PC diagnose the problem.

 

Tom

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No connection to Mouse or Keyboard, Screen blank.

I might try that, but I see that the mouse does work in the ports but the keyboard still doesn't.

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Hi KjRBLX,

 

That is promising (USB ports work).

 

I thought your screen was blank and the mouse and keyboard were unresponsive.

 

So you can see mouse activity on the screen?

 

Do you have video? Is Windows loading?

 

Tom

 

 

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No connection to Mouse or Keyboard, Screen blank.

Ok after I posted, I learned that the mouse is responsive, but not the keyboard. I've should of tested more, but the screen is still blank, and no I can not see mouse activity


@Grzwacz
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@Grzwacz wrote:

Hi KjRBLX,

 

That is promising (USB ports work).

 

I thought your screen was blank and the mouse and keyboard were unresponsive.

 

So you can see mouse activity on the screen?

 

Do you have video? Is Windows loading?

 

Tom

 

 




@Grzwacz
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Hi KjRBLX,

 

The power surge could have taken out the graphics system. Or maybe the monitor.

 

Any component could be damaged.

 

You have an AIO. troubleshooting an AIO is similar to working on a Laptop/Notebook.

 

Just about everything is integrated on the motherboard.

 

You may have to replace the MB if any integrated component was damaged by the power outage.

 

Maybe the external PS took the brunt of the power surge.

 

It still provides power but not enough to run the system.

 

Tom

 

 

 

 

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