monitor tv lcd

Specialist build INTEL
August 30, 2009 at 02:24:50
Specs: Windows Vista, QX6850 intel 4gb RAM
my lcd tv 42" is being used for my monitor
everything has been fine . and now i turn it on and
the pc boots up as normal but the screen is
black..any idea's please.!

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#1
August 30, 2009 at 03:31:02
Does the TV still work as a TV?
Do you have another working monitor you can connect to the PC for testing purposes?

How do you know your PC is booting "normally" if you are getting no display? Does it boot up and play the normal "Startup" sound? ( Does Vista have a default startup soundfile?)

Do you have inbuilt graphics or a separate graphics card?

Goin' Fishin' (Some day)


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#2
August 30, 2009 at 03:49:22
Hi richard ye sthe tv still works as normal..i dont have another
monitor to test it on..!.....the usual pc beeps as normal to show
its booted ok so i presume its fine...!....its been fine for 9months
until the other day..normal start up sound yes....separate
graphics card Geforce 8800 gtx....its my friends pc..!...it just
happened to have a black screen one day we have checked all
the cables and they seem fine so we r baffled...! we boot it up as normal but the screen stays black...!

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#3
August 30, 2009 at 10:59:32
Take your monitor over to your friends house and try it. if it doesn't work, the logical thing to suspect is the Geforce 8800 gtx or it's driver.

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Related Solutions

#4
August 30, 2009 at 13:03:42
Oops - see my next post.

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#5
August 30, 2009 at 13:13:41
Assuming your problem is ONLY there is no monitor display on the TV, and you also have a computer monitor connected and it has a display...

The TV/monitor video input source has to be set to something other than TV when you want the TV/monitor to display as a monitor. E.g. if you're using a VGA cable to the TV/monitor, PC or VGA or similar. You can do that on the remote or often also by pressing buttons on it, for/on the TV/monitor.

The TV/monitor video input source has to be set to TV when you want the TV/monitor to display as a TV on the TV/monitor.
.......

If that doesn't help, if you have unplugged the TV/monitor's connection to the computer and then started up the computer, Windows and the video drivers often only enable one display by default in that situation, even after you connect the TV/monitor to the computer again. The next time you connect the TV/monitor to the computer, and then start up the computer (don't connect it when the computer is running) , go to Control Panel - Display Properties - Settings, RIGHT click on the disabled display, and Enable it or similar.
(That's directions for XP or older.
In Vista,
RIGHT click on a blank area of the main desktop screen, select Personalize, Display Settings, RIGHT click on the disabled display, click on Attached (or Enable or similar).

Windows will leave the TV/monitor's display enabled as long as it's still connected when Windows is running.
............

If the TV/monitor is the only thing connected to the computer, via a VGA or DVI connection, then this setting probably is not right:

The TV/monitor video input source has to be set to something other than TV when you want the TV/monitor to display as a monitor. E.g. if you're using a VGA cable to the TV/monitor, PC or VGA or similar. You can do that on the remote or often also by pressing buttons on it, for/on the TV/monitor.
.........

If none of the above helps, the REAL problem is something else, and no video is merely a symptom of the computer is not booting normally.

If a computer monitor is connected to it, or if only the TV/monitor is connected to it and it's video input is in the proper mode on the TV/monitor,
- is the led on it a color other than green or red when you boot the computer?
(the standby or no video signal color)

- does the hard drive spin up?
- can you hear the cpu fan spinning?
- is the power led on the case on?
- does the hard drive activity led on the case light up and blink like it normally does when the computer is booted and is loading Windows (if you normally have to Login to your User the hard drive led will stop blinking shortly after that point)?

The computer monitor, or the TV/monitor in monitor mode if connected by itself via a VGA or DVI connection, doesn't need any software from the hard drive before Windows starts to load. You should have video while booting until at least the point Windows starts to load, even if there are video driver or other software problems in Windows.


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#6
August 30, 2009 at 22:46:32
thank you lads for all your info..... as it was working fine for
the last 9 months.. i suspect it could be the video driver or
even the graphics card itself like u said...im presuming the
only way of testing the card and driver is to test it out with
another monitor attached....if the same problem arises is
there any other way to test the card and driver if we still get
the black screen.?...also someone else said that it could be
the PS although the fans & pc are working but its possible
that it isnt giving enough power to supply the tv/monitor does
that sound like a reasonable cause...whats your opinion on
that..is that also a possibility, if so is there anyway of testing
an underpowering PS....as is has been working fine for the
last 9 months...thanks very much again for your time and
support..!...:)

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#7
August 31, 2009 at 00:02:05
You have not provided enough information.

Comment on what I said in the first part of response 5!

Answer the questions in the last part of response 5!

Yes, it's quite possible the power supply is failing - they often partially work yet the computer won't boot properly and you get no video - or it may be completely dead!

"i suspect it could be the video driver..."

See the last part of response 5 - a driver problem cannot cause no video before Windows starts to load!

Usually when you have no video, there is nothing wrong with the video drivers or the video card or the montor - something else is wrong!


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