What is the problem of HP w1972a LCD monitor ?

SOURCE: HP L1706 LCD Monitor - 'No Signal' Problem

Try to replace your memory.

SOURCE: Input Signal Out of Range

I have an HP 1730 LCD monitor on a Compaq Presario S5100 desktop PC running Windows XP, up to date on patches as of 2009 Feb 25. For no apparent reason, the "input signal out of range" error message started appearing when the machine switches from boot mode (which looks OK) to regular windows mode. (My configuration does not HAVE a "safe mode" boot, by the way, so the usual advice doesn't apply.) Was the fault in the monitor, or the computer?

Step 1: see whether the computer is actually booting or not. Result: Over the home LAN, I was still able to access the shared directory on the suspect machine. This is good.

Step 2: swap the LCD monitor for an old Compaq MV720 CRT monitor. Result: the monitor does not like the input signal (essentially, the out-of-range error by another name), so the video signal IS faulty.

Step 3: reboot the PC with the analog monitor still attached. Result: the system boots up just fine, so there's something wrong with the way the PC boots with the LCD.

Step 4: swap video cables (without rebooting). Result: the LCD displays the working desktop, so the LCD display is still good, but there's still something wrong with the handshake between the LCD and the PC during boot. But we still don't know whether the LCD monitor is failing to produce the right Plug-and-Play sequence, as it used to, or the PC is no longer correctly interpreting the PnP sequence, so it's mis-configuring the video signal for the monitor.

Step 5: Back everything up, like you always should have been. (Always the last step, after a computer failure. ;-) )

SOURCE: "Input signal out of range"

update ur driver

SOURCE: My monitor is saying ...input

hot connect it to another PC/Notebook that is using 1024x768 as a display resolution. Turn the monitor off, pull the power plug, wait 10 seconds, plug it in again and turn it on.

Bud Martin

• 11361 Answers
• Posted on Apr 07, 2011

SOURCE: i was installing windows 7

You need to lower your PC video card resolution to the native resolution of the monitor, it is too high right now:
http://www.fixya.com/support/r4873371-fixing_out_range_format_not_supported

Basic LCD monitor and TV troubleshooting guide:
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://www.fixya.com/support/r7406380-tv_training_manuals
Failed TV and Monitors pictures: http://s807.photobucket.com/albums/yy352/budm/

Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague

Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.

Or www.digikey.com just make sure to use caps with low ESR, 105c, high ripple current, long life rating such as PANASONIC FM or FC series.