my hp 2009 m light flashes blue in the corner and have no display

[omb55]

the blue light flashes in the corner and no display

[Echo_Lake]

@omb55
Thank you for posting on the HP Support Community.

Don't worry as I'll be glad to help, I have a few troubleshooting steps we could try to fix the issue:  
Use the following steps to see if the monitor can display screens from safe mode:

1. Cycle the power on the monitor as follows:

   1. Turn off the monitor. The power light on the monitor should be off. Leave the computer turned on.

   2. Unplug the power cord.

   3. Wait 5 seconds.

   4. Plugin the power cord.

   5. Press the power button on the monitor to turn on the monitor.

      One of two things happens:

      • The image from the computer displays on the monitor and you can use the computer again. This indicates that the monitor was unable to detect that the computer had awakened from suspend mode. Turn the monitor off when it is not being used or disable suspend mode on the computer. For some computers, updating the BIOS can correct these types of suspend problems.

        OR

      • The power light on the monitor comes on but the screen displays one of the messages again. The monitor is not receiving a video signal from the computer that it can detect and use. Continue using these steps.

2. If the computer is on, wait until the hard drive activity light on the computer is not lit and then press and hold the Power button on the computer case until the computer turns off.

3. If the monitor has a factory reset or restore option, set it. Press the Menu button on the front panel and select Factory Reset.

4. Wait 5 seconds and then turn on the computer by pressing the Power button again.

5. Adjust the Windows display resolution to a setting that is compatible with the monitor.

   NOTE: The best possible resolution quality for your monitor is the native resolution. The native resolution setting for your model of monitor can be found in the Monitor User Guide, the monitor's product packaging, and product specifications.

   1. Restart the computer and press F8 repeatedly after the first logo screen.

   2. Select Enable Low-Resolution Video (640 x 480) from the Advanced Options Menu.

   3. Windows should open showing a Windows desktop in a resolution of 640 x 480. Icons and windows appear much larger on the screen. You will need to use the Windows scroll bars to access the lower buttons in some windows.

   4. In Windows Vista, click Start , Control Panel, and click Adjust Screen Resolution in Appearance and Personalization.

      In Windows XP, click Start, Settings, Control Panel and then double-click the Display icon and select the Settings tab.

   5. Move the slider bar until a compatible resolution for the monitor is set, click OK.

      NOTE: You should notice a change in resolution after selecting OK - the icons and windows should appear smaller in size. If not, adjust the display resolution again.

   6. Restart the computer.

   7. If the native resolution is not available from the slider bar, click Advanced Settings, click List All Modes (from the Adapter tab), select the resolution, and click OK.

   8. Restart the computer and note what happens.

      • If Windows does not open and the message appears on the monitor, Windows is not loading or the monitor is not capable of displaying the basic display mode sent by Windows. Connect the monitor to another computer, such as a laptop. Doing so will help you determine whether the monitor is bad or if the computer you are trying connect is having a startup problem. If the monitor cannot accept standard video signals from multiple computers, the monitor should be replaced or repaired.

      • If Windows desktop opens in safe mode, the issue is related to the display resolution being used in normal operation (not safe mode). You should set the normal display resolution on the computer to the native display resolution of the monitor. To do this, you might need to reinstall the video drivers for your computer or temporarily connect another monitor.

        If the native resolution setting is not available as a selection in Windows, you can temporarily use 1024 x 768 to complete these steps. However, you should update the graphics driver on the computer. Updating the graphics driver can provide more display resolutions to Windows; possibly including the native display resolution for the monitor.

        • Check for NVIDIA video driver updates at the NVIDIA Web site (in English).

        • Check for ATI video driver updates at the ATI Web site (in English).

        • Check for S3 video driver updates at the S3 Graphics Web site (in English).

        • Check for Intel video support and downloads at the Intel Downloads Web site (in English).

        • If you own an HP or Compaq computer, HP hosts video drivers at the HP Software and Drivers site (in English)

Hope this helps! Keep me posted for further assistance.
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