Question about HP f1905 19" Flat Panel LCD Monitor

2 Answers

Output flicks very heavily

Dear, my lcd f1905 display is flicking very heavily even in bios post messages during boot. all the screen disply is scrambles and shows total garbage. few times in past, the problem automatically resolved after leaving the monitor ON for 15 to 45 minutes. but now i am facing this since 3 days. no megnatic fields and other display disturbing devices are near my PC. please advice.

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Check the speaker. There is a big magnetic field for magnet in the speaker case.

Posted on Feb 29, 2008

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Speak to HP/Compaq they will be able to advise. They are usually pretty good with hardware faults. You probably have a three year warranty on it so take advantage. Your mobile phone is not by your pc or any other wireless phone?

Posted on Feb 28, 2008

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What was the last thing you did on your computer before this happened?
Did you change any system settings in the BIOS?
Did you add new software? or update any software or drivers?
Did you add any new hardware?
Is your system BIOS infected with a virus?
Because it appears that your PC is hanging up during the Power-On-Self-Test [POST]

Here's what happens; when the power is turned on, the computer BIOS [Basic Input/Output System] runs a POST (Power-On Self-Test). It is a diagnostic testing sequence that the computer runs to determine if the hardware [like the mouse, keyboard, hard drive, etc.] is working properly.

If the necessary hardware is detected and found to be operating properly, the computer begins to boot; If the hardware is not detected or is not operating properly, the BIOS issues an error message.

The error message may be a text on the display screen and/or a series of coded beeps, depending on the nature of the problem.

The series or pattern of beeps may vary...they may be in a number of long or short beeps or a mixture of long and short beeps, or even one long continuous beep, depending on what type of BIOS is installed.

Since POST runs before the computer's video card is activated or the integrated graphic chip on the main board, it may not be possible to progress to the display screen.

So if an error is detected during the POST it will halt the boot process because the hardware is essential for the computer's functions.

How many beeps do you hear during the initial POST?

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Hi,
I think you're trying to output the screen to external monitor right ? So when you press Fn+F6 this will output to external monitor only but if you do it again it will output to both (External and you LCD) and if you repeat the step again you're back to normal.
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I have no experience with the DVI links because such technology is still unavailable here in Argentina. We have DVI video cards but finding a suitable DVI monitor is another (long) story.
I think that your card (that has 2 DVI ports) is initializing one port first (the primary one) and then, when windows starts, it initializes the other and outputs video from both ports.
Try connecting the monitor in the other DVI port.
If your card has a VGA output, the VGA gets initialized first.

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1 Answer

Mag monitor doesn't display bios post


The BIOS is sending the display information to the monitor but, when you turn your PC on, the LCD will be sleeping and it will take 1~2 seconds to wake up when receiving the display signal. The monitor is working and even if the BIOS messages aren't displayed, you can still press the correct keystrokes to get to the SETUP screen or press PAUSE in the keyboard to see what's going on in the POST.
If your LCD has a bicolor LED indicating the status (Standby/On) keep looking at it, when the LCD gets the video data, the LED turns instantly from amber to Green or blue even if the screen is still black. This way you can have an idea when the LCD gets the initial video signal and to press the keys accordingly.
Your PC will also delay the video output from the secondary video card because it's detected after the onboard card.

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Component video has a max resolution of 720p. in order to use 1080i or p you have to use hdmi or dvi connections. That is why you get the flicker.

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see this post
http://www.fixya.com/support/t155971-benq_t701_lcd_monitor

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