Question about HP Media Center m7657c home PC - RC640AAR 19" LCD Flat Panel Monitor
I replaced power supply and checked all cables and wiring in tower and on monitor. Video card is still good, I checked it on another computer. Does this sound like I need to replace the motherboard?
Turned on computer (Pavilion a1657c), HD light operates, Monitor has little window saying:
HDMI Input: No Input Signal
VGA Input: No Input Signal
Recommended Settings: 1920x1080 - 60hz
Changed from the monitor that came with it (HP f2105 digital ouyput) to my Samsung analog and same message comes on dark screen.
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Posted on Jan 02, 2017
Sounds like you are in a bit of trouble!
Based on what you've told me, it looks like it might be a video card fault. However, a few things to check first are..
Make sure the VGA & DVI are secured tightly in to their slots, especially on the monitors as gravity can sometimes be a pain!
Use different cords, rather than the original ones you use. This is to eliminate the the point that the cords may be the issues.
And last to know whether it's the monitor or not.. check and use your monitors on another PC. If they go, then it is a hardware fault in your PC, sometime things can come lose and problems can occure espeically with older PCs as they die out. Much like a older car wears down, so do the parts of a PC.
The suggestion I then give you is to pop it in to a Computer Shop, let me test it for a half hour fee and see what they recommend. Possibly it could let on to getting a new graphics card, for a basic one it's no that costly and could solve your problems easily. Or.. it might in fact be a motherboard fault... It's hard to tell, unless you get hands on with it, and test and elimate the causes.
Well, all I can say is good luck, and hopefully you find the issue. Besides, buying something new is always a good thing, so perhaps it's time you upgraded anyway? =D
I hope I've been able to assist you.
Posted on Jul 01, 2009
may be the power button get stuck when you pressing to switch on.just change the power button cable with reset button and see. also chek the **** aslo just remove it and clean it and fix it again.
Posted on Sep 10, 2009
kkjsr00, You must narrow down the faulty component!!! You must prove what is working and what is not working!! Beg, borrow, steal a "known-good" monitor to prove your pc is operating perfectly and will display the WIN-desktop screen on it. If your pc is A-ok then visit this web blog:
http://www.lesliewong.us/blog/2005/05/02/hp-pavilion-f1703-flat-panel-display-blackout-solution/ kkjsr00, when strange and weird stuff starts to appear on the screen of "cold-cathode-fluorescent-lamp" back-lit lcd displays the first place I would look at would be the units internal "switch-mode-power-supply/ccfl inverter supply".. No, No, No, unit not going to sleep!!! SMPS/inverter going into SHUTDOWN mode having detected a fault condition with itself or other circuit and is trying to save itself from catastrophic, nonrecoverable failure. e.g. smoke, fire, burn down house, etc. Do some reading in my profile and those of other fixya tech's and you will find more than enough info to help with your problem. Good luck with repair of "flakey" solder joint or bad electrolytic filter capacitor PLAGUE problem. Yes, you sure have a lot of reading to do!! 12fixlouie or old file is louie12fix also try "buddymc" , "budmrtn" profiles for more info.
Posted on Apr 27, 2010
It sounds like it may need a VGA replacement. If it was working on one computer and not the other I would say to look into the video card within the computer. If you have a warranty on the monitor you can call the support line and they will repair or replace it for you
Posted on Nov 11, 2010
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