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  1. #1
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    Computer boots but no video/no beep[s]

    First time user, if in wrong thread feel free to move.
    But several weeks before it would not boot at all.
    I went into Google & found that if you hold the control, alt, delete
    & power button down for a few seconds it would boot, which it did.
    Worked fine for a few weeks. Now i have the above problem, I have fans running, a few lights but no video/no beep[s].
    Also it would not fire an external Monitor. Thank you for any assistance.
    Product Name: Pavilion g7-1075dx LF157UA Notebook

  2. #2
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    Is the PC up-to-date with patches?
    Have you added or changed any hardware recently?
    Have you added or changed any software recently?
    Can you get into the BIOS?

    Joe

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  4. #3
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    Disconnect from the power and take the battery out for 10 minutes, then try again.
    Holding down the power button for >6 seconds should turn the PC off.
    To get into the BIOS press the Del key several times as the computer powers up.

    cheers, Paul

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  6. #4
    Super Moderator Rick Corbett's Avatar
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    I'm pretty sure it's F10 to get into the BIOS on HP laptops (and desktops). It's possible it's a GPU or wifi card issue - have a look at this post.

    Hope this helps...

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  8. #5
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    OK, First "happy New Year" to all. PC is up to date, Installed new hd in Computer because it was my friends Computer[he died], Wife gave myself the Computer but wanted the HD back. Installed new HD Remember Computer worked fine after that for several weeks. I removed the Battery ,reinstalled it then tried DEL once but still no video, tried again, nothing. Rebooted then tried ESC, nothing, going quickly to DEL tapped twice & Computer booted right up into Win 7 ???
    P.S. I could not get into bios using the DEL button & What is causing this Computer to act this way ? Rick, I have not tried your post yet & thanks to all of you.
    Last edited by Rbl; 2016-01-03 at 09:02. Reason: spelling

  9. #6
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    While you have it up and running, create and see what a Paragon Rescue disk can do for your Boot sector.

    https://www.paragon-software.com/home/rk-free/

    You should also create a Repair disk to boot up with so that you can navigate to the Recovery Environment to run Startup Repair to see if that can do anything for you.

    HP also has built in diagnostics http://www8.hp.com/us/en/campaigns/h...gnostics_cc/dt
    Last edited by Sudo15; 2016-01-03 at 11:54.

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  11. #7
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    Since it's an HP http://h20564.www2.hp.com/hpsc/doc/p...r_na-c02782018 I would agree with Rick that you probably need to tap F10 to get to the BIOS.
    From the description of the problem, it sounds like the MB could be failing intermittently. It happened to me once where the fans would run, lights come on, but fail to boot to OS. The problem turned out to be that during POST it saw a problem with the onboard video and stopped. A new MB cured the problem after much testing.

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  13. #8
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    Well I had it up and running, left it on for a while for a few updates, ate Breakfast, came back to Machine a little later & the Video had disappeared altogether but Notebook was still running. I shut off Machine ,I re booted but I could not get any video up even by trying F10, Escape or even by holding the Control/alt/delete/power down. Thanks for your replies.

  14. #9
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    If you remove the battery, and run it on AC is it stable?

    If you run it on battery, disconnected from AC is it stable?

    Differentiate whether it is hardware or software/OS/drivers by booting up an Ubuntu or Linux Mint LiveCD.
    • If it stably runs then Win7 Pro or whatever is either corrupt, driver corrupt, startup app issue or boot drive issue. ==>soft diagnosis
    • If still not stable then hardware issue.


    There is not a whole lot of other trouble shooting to do on a laptop (as long as all peripherals are removed) other than replacing memory, or running on one stick and then the other, or a different boot drive. An external monitor can be connected as well to make sure it is not the screen.

    http://h20564.www2.hp.com/hpsc/doc/p...r_na-c02782018

    http://support.hp.com/us-en/product/...30AQO5O3KA30B3
    Last edited by Fascist Nation; 2016-01-03 at 15:20.

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  16. #10
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    Sounds like a flaky connection or display. Can you connect an external monitor to test?

    cheers, Paul

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  18. #11
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    I mentioned in my first post that I had already tried that. Thank You.

  19. #12
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    Can you boot up into Safe Mode with Networking to see if you get video to run the built in diagnostics ?

    Windows diagnostics doesn't run in Safe Mode but HP's should.

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  21. #13
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    Nothing happens when trying F8, Computer boots but no Video. Thank you

  22. #14
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    Usually with no display at all on a laptop could suggest the Backlight or the Inverter and shining a strong light onto the screen to see if there is any text or an image could determine which, but as you are unable to connect to an external monitor and have no VGA in Safe Mode would suggest something is sadly amiss with the motherboard.

    Probably time to take it to a tech shop for confirmation/examination.

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  24. #15
    Super Moderator Rick Corbett's Avatar
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    Sorry to say but I still think it's likely to be a problem with the GPU... something that, unfortunately, this model laptop appears to be known for.

    Do a Google search for pavilion g7-1075dx gpu problems or hp pavilion g7-1075dx black screen and you'll find many, many results which describe the same issues that you are experiencing (including YouTube videos about repairing the fault).

    For example, have a look at this thread about an identical (LF157UA) model.

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