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my screen isnt detecting any input


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#1 dstone456

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Posted 15 January 2017 - 12:08 AM

Specs:

Graphics Card:      Asus GEFORCE GTX 1060                                             (3 months old)

Motherboard:        Asus  H170-PLUS 03  LGA 1151 ATX                             (10 months  old)

CPU:                     Intel core i5 6500 Quad Core LGA 1151 3.2 GHZ            (10  months old

HDD:                    Western Digital Blue 500gb Sata 3 HDD caviar blue          (2 years old)

Ram:                    Kingstoln HX318C10FRK 2/16 16GB Hyper x Fury red      (2 years old)

Power supply:     gigabyte 900w (cant find the reciept)                                   (8 years old)

Screen: lg 34 inch ultrawide                                                                             (3 months old)

 

I was using my computer last night, worked perfectly i shut it down the usual way. when I woke up and turned the computer on the screen remained blank and eventually displayed no input detected. The computer stayed on lights and fans remained stable and no beeping sound to indicate what is wrong. alot of the parts are still under warranty but i cant figure out how to identify the problem.

 

the things i have done to try and fix it.

used the display port cable instead of the HDMI cable.       no effect

Plugged in a different monitor to check it.                            ( no effect)

reset the Bios by removing the motherboard battery             no effect

reseat everything inside the computer, disconnect all cables  including pwr, reset, hdd etcc

nothing i have done so far has had any effect.

 

any help would be greatly appreciated. Thankyou.

 



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#2 dstone456

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Posted 15 January 2017 - 12:48 AM

It might be worth mentioning that im from australia and it was 42 degrees yesterday (108 Fahrenheit) but the computer never overheated.



#3 opera

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Posted 15 January 2017 - 01:25 AM

Does it have onboard graphics?

 

If yes, unplug your graphics card and try booting again.



#4 dstone456

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Posted 15 January 2017 - 03:06 AM

no onboard graphics.

and unfortunately i dont have any spare parts to sub in and out to figure out whats wrong



#5 Xoctane

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Posted 15 January 2017 - 06:45 AM

I'd look at the PSU. 8 years is quite old. Plus, no beeps indicates a power problem, provided you had a single beep before when the computer worked properly.

 

What happens if you remove the RAM? Does it beep?



#6 dstone456

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Posted 15 January 2017 - 10:11 AM

no beeps without ram



#7 Xoctane

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Posted 15 January 2017 - 10:24 AM

provided you had a single beep before, when the computer worked properly.

 

Did you have it before or did you not? I'm referring to the single, short beep that sounds a few seconds after you hit the power button.



#8 dstone456

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Posted 15 January 2017 - 11:36 AM

yes



#9 dstone456

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Posted 15 January 2017 - 11:48 AM

I guess what I really want to know about is any tests I can do to rule out parts.  at the moment im thinking it could be graphics card, psu, cpu, ram, hdd. (so basically everything)



#10 Xoctane

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Posted 15 January 2017 - 11:57 AM

No beeps means that it's either the PSU or the motherboard, PSU being the most likely and most obvious since it's an old one. There's a way to test the PSU with a multimeter; it involves measuring the various voltages it supplies while it's connected to the computer and drawing power.



#11 dc3

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Posted 15 January 2017 - 03:34 PM

I agree, nine years is a long life for a PSU.  A PSU uses electrolytic capacitors of which the electrolyte evaporates over time altering its' properties.  In short, they fail.  This failure in a PSU is manifests itself in a loss of power.  This means that the wattage will eventually start lowering.

 

If you have a multimeter with a DC scale that will read between 2 and 15 volts you can read the three main positive rail voltages to see if they are still producing their voltages within proper tolerances.  That would be +/- 5% of their rated rail voltages.

 

The three rail voltages that should be read are the 3.3V, 5V, and 12V. 

 

The voltage tolerances should be the following.

 

Maximum.........Minimum
12.6V.................11.4V
5.25V.................4.75V
3.47V.................3.14V
 
If you have a multimeter and know how to use it I would test those three rail voltages.  If you have a meter but need help in the form of instructions I can help you there as well.

Family and loved ones will always be a priority in my daily life.  You never know when one will leave you.

 

 

 

 


#12 dstone456

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Posted 15 January 2017 - 10:03 PM

Thanks alot. I just went out and bought a multimeter and am about to give it a shot :) ( I watched a video on youtube about it) will post results



#13 dstone456

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Posted 15 January 2017 - 10:36 PM

i got yellow     12.09

        red          5.12

        orange    3.4

A bit disappointing really



#14 dstone456

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Posted 16 January 2017 - 05:34 AM

so while i had my psu out i noticed it was really dusty and took a leaf blower to it and my case with most of the parts out. I then put everything back together and it worked properly. I don know what the problem was but its working for now. Hopefully it stays that way. thanks alot everyone



#15 dc3

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Posted 16 January 2017 - 10:31 AM

An accumulation can cause overheating problem which can cause this type of problem.  It sounds like you resolved your issue.


Family and loved ones will always be a priority in my daily life.  You never know when one will leave you.

 

 

 

 





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