dell m6700 no video

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  • NicolaM
    New Member
    • Jan 2022
    • 3
    • Italia
    #1

    dell m6700 no video

    hi,
    I have a dell m6700 that does not show video, the display turns on the backlight for about 3 seconds and then turns off, I also tried to connect an external HDMI and VGA monitor but the monitor doesn't even turn on

    I have already tried flashing both bios roms, I removed the discrete nvidia GPU, I changed the ram, I changed the wiring of the LCD panel but nothing seems to change.

    The logic board detects the absence of CPU and RAM, and GPU if I remove them.

    the leds do not indicate any anomaly, the only one that lights up is the caps lock one,iif you press the key on the keyboard it turns off but on the next start it stays on.

    if i holding down D generates the colors on the screen correctly, in diagnostics (holding down FN at start up) it does not show anything on the display, it makes 3 beeps instead, then 2 beeps and 1 beep.

    I have no idea what it could be, I only note that the CPU (which I have already changed) heats up a lot
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