VGA signal not detected, monitor goes into sleep mode

[dianetk9]

Monitor goes into sleep mode,  must reboot desktop.

Intermittent issue;  receive No Signal upon bootup while monitor attempts to connect to VGA, again goes into sleep mode, must reboot.

Fine while using computer, but if you walk away, monitor goes into sleep mode and can't get it out without rebooting.

[Barachiel]

@dianetk9

Good Day. A warm welcome to the HP community.

I reviewed the case regarding issues with the computer.

I will be delighted to assist you here.

Here’s a related HP Forums post that seems to have helped others: Click here 

For step by step guidance: 

• Sleep and Hibernate issues after upgrading to Windows 10 

• The computer does not go into sleep or hibernate mode 

• Disabling the password requirement when resuming from sleep 

• Disabling hybrid sleep in Windows 

• Understanding Windows Sleep and Hibernate modes 

For additional details and steps: Click here 

Keep me posted. 🙂

[dianetk9]

This is a 9 year old computer running Windows 7 NOT 10.

Initial bootup; when Monitor Status window displays it reads "Scanning" for DVI and VGA signal.

NO SIGNAL is detected and monitor goes into Sleep mode.

Must REBOOT computer and sometimes the monitor as well to get VGA signal  recognized.

When computer/monitor are working normally, all is fine.  However, if I leave computer and monitor goes into sleep mode, I have to reboot the computer to have the monitor recognize the computer or vise versa.

Could this be either a HDMI cable issue or even the computers motherboard as there is no separate VGA board.

Nothing new has been installed as a matter of fact I have uninstalled unused applications and files.

I'm having other problems as well, like Microsoft disk defrag won't run at all, the computers clock time is off and task scheduler results in multiple errors.

Maybe it's time for a new computer?  But I thought I'd try to fix myself first.

[Barachiel]

@dianetk9

Thanks for the reply.

Please follow the below steps: 

Step 1: Enabling the Keyboard in Windows 

Skip this step if the computer does not enter sleep mode or if the computer wakes unexpectedly. 

Follow these steps to enable your keyboard to wake your computer from sleep mode: 

1. In Windows, search for and open the Device Manager. 

2. Click the arrow next to Keyboards and double-click the name of your keyboard. 

3. If the Power Management tab is available, proceed to the next step. 

If the Power Management tab is not available, click the Change Settings button if it appears below the Device status box. The same Keyboard Properties window opens with the Power Management tab available. 

If you are prompted for an Administrator password or confirmation, type the password or provide confirmation. 

1. Click the Power Management tab and make sure that the box next to Allow this device to wake the computer is checked. 

2. Click OK, and then test to make sure that the keyboard can now wake the computer. If the computer still cannot wake from sleep mode, continue using these steps. 

3. For instructions on how to update the BIOS of your computer, see one of the following HP support documents: Updating the BIOS (Notebooks) 

For more steps, please Click here

Let me know. 🙂

[dianetk9]

I went through all the steps and more verifying Windows updates and drivers are all up to date.

I'm looking at replacing the motherboard next.

[Barachiel]

@dianetk9

Thanks for the response.

In this case, I would recommend you to re-start the computer, Keep tapping F2, and run a complete test to make sure if it's not a hardware issue.

Let me know. 🙂