Not able to get display output from my Desktop PC

January 31, 2015 at 20:47:48
Specs: Windows 8.1 Pro, i3 2100 / 4GB 1333mhz
I don't really remember id last time my PC was on sleep or shut-downed but when i started it by pushing the power button i can only see a dark display on my led screen then i tested the led screen with my laptop it was working fine and i am using it for asking this message too so i thought may be the VGA cable got loose and tried to adjust because it happens some time with my PC bit still no luck then i started checking the hardware's my self but didn't found a noticeable reason so i thought let me clean everything before putting it all together and when i removed the CPU out from the motherboard i found something suspicious of which i got some pictures to show you guys and one more point which can lead you to the right cause is when i press the power button of my cabinet it used to blink with the blue led lightning around it one time when starting but its keep staying on permanently you can look at that in the uploaded pics too. I just want to know which part can be the real issue for this because i was thinking about upgrading some things 1 by 1 which are motherboard processor and power supply so if that's motherboard problem with processor area I'll order a new motherboard but i need to be sure that its the problem an idea to diagnose the right thing right way will be appreciated and ask me anything you want to THANK YOU.

One more thing by saying no display i mean dark screen but its not saying no signal etc. and i can hear all the parts running like hard disk and graphic card.

Here are the IMAGES on G-DRIVE
https://drive.google.com/open?id=0B...

message edited by GTecH-AG


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#1
January 31, 2015 at 23:14:00
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How to Boot a Computer from a Lazesoft Recovery USB Device
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#2
February 1, 2015 at 00:13:53
The blank/dark screen you see means you get no posting or logo screen when you first turn it on? And as far as you know nothing happened to it and there were no changes made to it between the last time it worked OK and the first time it didn't

I don't see anything suspicious in the photos you posted. What exactly did you mean by that?

Try temporarilly disconnecting the drives and removing any unnecessary add-on cards. Remove any USB devices you may have connected. Oh, when you're fiddling around inside the case make sure you have the power cord disconnected. Make sure the cpu and its heatsink are correctly installed, since you previously removed them.

If the power supply has a 115/230 voltage switch on the back make sure it's in the correct position. DON'T GUESS. And don't change it unless the power cord is disconnected. (It's probably fine unless kids or other gremlins have been messing with it.)

Then plug it back in, start it up and see what happens.


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#3
February 1, 2015 at 01:45:28
@ DAVEINCAPS
I'm sorry i wasn't specific about my doubt by suspicious i mean the pins which touches the processor one of them are not like others its bended ....

and whats about that blue light its ON all the time now but it used to turn ON only for a second when i press that button to start the PC not all the time permanently. i think that can be sign for something specific in term of errors or something wrong with a particular piece of hardware thanks for your reply also.

Also i am using Radeon HD R7 240 GDDR5 GPU can i test the display by simply removing the GPU and using the Mother Boards's VGA output will it work ? and can i also try to boot from a USB for testing like you can say a window boot able USB?

One more important info i also am not able to see even the bios screen.

message edited by GTecH-AG


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#4
February 1, 2015 at 04:49:49
Beside bended pinS I see some wires (dust treats?) in the CPU socket.
the metal looks corroded as if it was stored in a damp place.
I think you have seen the best of this motherboard....

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#5
February 1, 2015 at 06:25:30
If there are bent pins, they most likely weren't bent until you pulled the CPU, which I don't know why you did in the 1st place? But since you did, I assume you cleaned off all traces of the old thermal material from both the CPU & heatsink, then re-applied fresh paste using the vertical line method?

http://www.arcticsilver.com/pdf/app...

Also, you didn't list your complete specs - motherboard, CPU, RAM, graphics, HDD, power supply. Are there any beep codes coming from the tower?

Do as suggested - disconnect ALL unnecessary hardware to see if you can
pinpoint the problem. Start by unplugging the power cord, then remove all PCI & PCIe cards, connect the monitor to the onboard graphics port. Unplug all external devices except the keyboard & monitor (use a wired keyboard, PS/2 if possible). Unplug all drives (HDDs & Optical). Remove all RAM except for one stick. While still unplugged, use the clear CMOS jumper to reset the BIOS. Then plug in the power cord & see if the system will boot. If it does, immediately enter the BIOS & correct the date/time & any other settings affected by the reset. Then begin reassembling, adding one hardware item at a time.

message edited by riider


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#6
February 1, 2015 at 15:34:30
If you still don't get the posting or logo screen then yeah you can remove the video card and see if the on-board works. But if you never get any video there's no sense in setting up a bootable USB drive since the process isn't getting far enough to boot from anything.

(Sorry for my tardiness. I've been busy deflating superbowl footballs.)


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#7
February 1, 2015 at 23:23:18
Ok everybody nothing worked and i decided to buy new hardware pieces starting with new PSU & MOBO - corsair vs 550 & Gigabyte b85m-d3h i'll see if the upgrades will help me or not if everything will work its good otherwise i'll upgrade the CPU also from i3-2100 to i3 4130 and then only CABINET will be the old piece left in the RIG anyways really appreciated all your reply's and answers thanks for that guys. BTW just got a question can anybody tell me about that power switches led permanent issue what hardware fault can force that led to be ON all the time instead of 1 blink when starting the images also contain that off and on state. Again thank you very much...

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#8
February 2, 2015 at 00:48:00
Most I've seen have a green LED for power and it's on whenever the computer is on while the red LED is for hard drive activity and only flashes when it's being read from or written to.

Your setup must be different but I can't say that 'always on' points to something specific. Well, probably more likely the power supply than motherboard but that's certainly not a definite.


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#9
February 2, 2015 at 08:18:51
Your image shows bent contacts on the motherboard, these can sometimes be painstakingly straightened but not all of the time and most do not have the touch or patience for it. You probably did not lift the CPU straight out but dropped one corner back down, then made a grab for it, making it worse.
A new motherboard will help this problem but you may still need to address the original issue. Upgrading a power supply is always good if you have an original factory model installed. Since you are thinking about upgrading the CPU also, consider getting the upgrade together so you can get the latest generation of both, even if that means putting off the power supply (as long as you are sure that it works) until later and check compatibility of your RAM as well. Your original problem could be power supply related or graphics card related.

You have to be a little bit crazy to keep you from going insane.


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#10
February 7, 2015 at 00:24:28
my led is also showing that kind of problem i've removed all kinds of wire and replugged them after cleaning but problem not solved plz help me......

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#11
February 7, 2015 at 05:49:45
See #9 again. Your problem is now with the CPU socket on the motherboard. Unless this can be remedied then you will continue to have trouble. If you were thinking about an upgrade, it is probably time for a new build. Rethnk everything, if an older component is not up to today's standards then it should not be included in your new build since compromises in components chosen in order to continue using an older component rarely makes a good machine. Choose carefully, choose quality, especially motherboard, CPU, and power supply.

You have to be a little bit crazy to keep you from going insane.


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