Question about ASUS V8420/TD Graphic Card

2 Answers

Defect ASUS V8420 ?

As soon as I plug in my monitor in the ASUS V8420/128M (TVRD)
the monitor stops working. When monitor is unplugged again, the monitor works again.
best regards

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  • 1 more comment 
  • lereng Apr 22, 2008

    The system used to work ok.

    But suddenly there was no picture on the monitor.

    I thought that the problem was the monitor, like broken fly back trafo or something else wrong with the high voltage circuit.

    But as soon as I unplugged the monitor to replace with another one, the monitor switched on and of course gave me a no sync or no signal message, but as soon as I plug back in the monitor it switches of again.

    I presume there is something wrong with the video card.

  • Anonymous Oct 13, 2008

    video card has gone out my fan quite working and cause it to shut off the monitor

  • Rajkumar Bordoloi
    Rajkumar Bordoloi May 11, 2010

    r u using any graphic card



2 Answers

Yes you are correct. It is an old CRT type monitor. (LG studioworks 995E). Worked perfect (for my purpose).
When I reboot I do not see anything. Monitor stays black.
No power on self test screen, nothing. I really think the card is dead.
By the way, of course I'am using another computer to sent these comments.
Thanks for your help so far anyway.
best regards

Posted on Apr 22, 2008

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  • 150 Answers

I don't understand, please explain more:

0) What kind of a monitor is it ?

1) If the monitor is NOT plugged into a working video card,
it should blank out or display some sort of a
"NO SYNC" or "NO SIGNAL" or "UNPLUGGED" warning.

The power light may also flash or show a different color.

2) If the monitor is plugged into a working video card,
it should wake up from the inactive power-saving mode
and display the desktop.

3) If the video card is malfunctioning, or if the windows
video settings are set outside of the monitor's sync limits,
the monitor may turn off or display a warning message,
such as:

No sync, Out of range ... etc.

4) The repair situation (3), reboot windows into
safe mode:

a) Press Hardware Reset

b) After the power-on self-test (POST) and memory check
press and hold the F8 Key

c) Select Safe mode

d) Login to windows at low resolution

e) Right-click on the desktop, chose:

Properties -> Settings -> Set the correct resolution, apply
Click advanced -> monitor -> set the correct refresh rate.

Reboot normally

Hope this helps


PS, some monitors have dual inputs: VGA or DVI
make sure the correct input is selected, depending
on your cable (VGA is a 15 pin "D" connector,
DVI is a larger connector with many more FLAT pins)

Also some video cards have multiple outputs, which are
activated only if a correct monitor is attached BEFORE

Posted on Apr 22, 2008

  • Martin J Stadler
    Martin J Stadler Apr 22, 2008

    Am I correct in assuming this is an older CRT type monitor, since you mention the fly-back, LCD flat screens do not have one, they
    work on low voltages an entirely different principles.

    Anyway I do not think that the video card is dead, since it is
    generating a sync which is being detected when the monitor goes out.

    1) It is more likely that this is a VIDEO SETTING, such as:

    a) resolution is set too high
    b) refresh rate is set too high or invalid for the monitor.
    c) the sync type and/or polarity is set wrong
    d) the video card and/or the computer is in standby mode

    Does this happen when you are in windows, or does it happen
    during boot ?

    When you reboot the computer: Do you see the VIDEO BIOS
    information screen? Do you see the Power on Self Test screen?
    Do you see and text on the screen when you power it up?

    or does it die when windows switches to hi res mode.




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