monitor(s) intermittently failing to activate on cold boot up

  1. Posts : 11
    windows 10 64bit

    monitor(s) intermittently failing to activate on cold boot up

    Iíve started encountering a problem with my desktop PC running windows 10.
    I have 2 monitors fed by a GeForce GTX 670 on a Gigabyte GA-Z77X-D3H motherboard with an Intel I 7 3770K chip.
    Recently the monitors have failed to display anything when the PC is switched on Ė not always Ė but frequently enough recently to raise the alarm that this is a problem.
    The PC emits its usual beep but no start up screen or any other sign of boot up occurs with increasing frequency.
    Iíve tried booting to Ďsafeí Ė no effect ; un/replugging the hdmi cables and swapping them over Ė no effect ; soft rebooting and completely disconnecting from the mains. A total switch off from the manins worked twice but now even that cannot guarantee a cure - the failure rate of booting to a visible desktop is getting greater.
    This is a fairly venerable machine (built 2012), but has performed as a steady workhorse for years, requiring only a thorough vacuuming some time ago to deal with filth build up on internal fans.
    I might add that when (as now) both displays are on, everything is normal, no shudders, odd noises, nothing suspicious at all.
    Before I dismantle things, has anyone a pointer as to the most likely cause of this gremlin?
    BTW Ė 1 further point.
    The button battery on the motherboard. If this is replaced (and I suspect itís on its last legs), does it mean that anything has to be reset? Over the years Iíve fitted 3 extra hard drives.
    I hate going into BIOS, the Gigabyte GA-Z77X-D3H motherboard display is not a model of clarity and a lot has been lost in translation. If I can get away with not having to navigate the BIOS screen, either in its traditional or Gigabyteís flaky schematic form, Iíd add years to my life
      My Computer

  2. Posts : 66
    Windows 10

    PSU possibly has failed caps and oddly enough, caps of high-quality manufacturers seem more likely to be invisibly failed. (no leaking or bulging to be found)

    But caps of good quality, usually are still OK.
      My Computers


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