No signal monitor but a working PC

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Fletcherevo716

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Dec 17, 2016
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Well today I have improved my computer by adding a new motherboard, psu, ram and also a new case. Unfortunately everything didn’t go as planned and although the computer runs it doesn’t output any type of video. So I went off a lot of googling about disconnecting ram moving it about, nothing happened problem not resolved, I removed my gpu and etc, not resolved anything. I even used the system speaker to see if I could identify any issues and no beeps so I don’t know what else to do from here, any help?
 
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terry4536
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terry4536

terry4536

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Mar 28, 2010
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Did the speaker verify that the PC passed the POST with a single beep?


There are a few things that may cause this. Is the power supply of sufficient power to run the GPU? Are the PCIE power cables connected to the graphics card? Are all of the power cables to the motherboard connected? Is the monitor cable correct for the monitor? Is the monitor cable plugged in to the GPU? Have you tried moving the graphics card to another PCI E X 16 slot?

Next thing is whether the graphics card is detected by the operating system? Remove the graphics card and plug the monitor into the motherboard video output. Is there a display then? If so, enter the BIOS and set the graphics source to Integrated. Then reinstall the graphics card, but leave the monitor plugged into the motherboard. Then check to see if the GPU is listed in the Device Manager under display adapters.

Did you try booting from the Windows installation disc? The operating system will need a fresh install with a new motherboard.

 
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Fletcherevo716

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Dec 17, 2016
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I have already tried all of the above and the monitor just doesn’t gain a signal from the computer itself so i don’t know why it isn’t working, I’ve had a mate come around to look at it as he is better at pc building and he has no clue why because it looks perfectly set up

 
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Fletcherevo716

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Dec 17, 2016
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Not good with this type of stuff what do you mean RMA It I took the motherboard out of the case and only attached the cpu and fan with 1 stick of ram and still no display
 
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Fletcherevo716

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Dec 17, 2016
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My new system is a
-Corsair 750D obsidian series case
-Strix h270f gaming motherboard
-Geforce gtx 1060 6gb Graphics cafe
-intel i5 6400 2.8ghz cpu (only part that’s not been upgraded yet)
- 2x4 DDR4 vengeance LPX RAM
-Corsair cx750 powersupply
 
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terry4536

terry4536

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The term RMA means "Return Merchandise Authorization". When you return merchandise to a business, you either physically take it to the business returns desk or you ship it to them. When you ship it to them, virtually all businesses require prior authorization before you ship it to them. They assign an return merchandise authorization number which is to be placed on the package long with the return address.

Business have a return period where the accept returned merchandise. Since the motherboard is new and you are having problems with it, my advice is to return it. And get another motherboard that works.
 
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terry4536

terry4536

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Testing it as you did outside of the case is referred to as breadboarding. It simply removes other possible problems (like shorting to the case), and it narrows down those possibilities until you can focus on just the motherboard (or other part).

Doing it before installing it in the case saves time and frustration.
 
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terry4536

terry4536

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If the power supply is working, the 750 watts is more than enough power to run the system. The RAM is a matched set. So that should work if the frequency and voltage are supported by the motherboard.


4 x DDR4 DIMM sockets supporting up to 64 GB of system memory
* Due to a Windows 32-bit operating system limitation, when more than 4 GB of physical memory is installed, the actual memory size displayed will be less than the size of the physical memory installed.
Dual channel memory architecture
Support for DDR4 2400* / 2133 MHz memory modules
* To support 2400 MHz or XMP memory, you must install a 7th generation processor.
Support for ECC Un-buffered DIMM 1Rx8/2Rx8 memory modules (operate in non-ECC mode)
Support for non-ECC Un-buffered DIMM 1Rx8/2Rx8/1Rx16 memory modules
Support for Extreme Memory Profile (XMP) memory modules
* To support 2400 MHz or XMP memory, you must install a 7th generation processor.
Click to expand...

https://www.gigabyte.com/Motherboard/GA-H270-Gaming-3-rev-10#sp

The motherboard supports a very narrow window of RAM frequencies. That is a possible problem.


Windows® 10 64-bit (for 7th Generation Intel® Processors)
Windows® 10 64-bit / Windows® 8.1 64-bit / Windows® 7 32-bit / 64-bits (for 6th Generation Intel® Processors)
* Please download the "Windows USB Installation Tool" from GIGABYTE's website and install it before installing Windows 7.
Click to expand...


The motherboard supports Windows 10 only (without using a tool from the manufacturer for Windows 7). That is a possible problem.
 
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terry4536

terry4536

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The only problem with that plan is that most businesses limit the return period. Depending upon where you purchased it, you may have 30 days to return the motherboard. Sending in the motherboard to the manufacturer for warranty repair or replacement can take longer than that. In which case you will not be able to return it to where you purchased it.

If you want to send it in to the manufacturer, document that the business will accept the return. If they don't then simply return it now. The other limitation is (that even if the manufacturer replaces it) the replacement will likely be a refurbished motherboard not a new one.

Returning the motherboard to the seller insures either a refund or a new motherboard.
 
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Fletcherevo716

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Dec 17, 2016
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I was thinking of refunding the motherboard seeing as I only got this motherboard less than 3 days ago so hopefully their return policy isn’t limited to less than that which I highly doubt
 
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hang-the-9

hang-the-9

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Mar 25, 2010
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If you are not swapping CPUs, why did you replace the motherboard? Were you using some OEM system with an OEM motherboard originally? Use your original motherboard, does system work then? Should rule out an issue with the motherboard if it works with the original one.
 
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Fletcherevo716

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Dec 17, 2016
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I just found out today that it’s the cpu that’s faulty, even though I haven’t changed it or messed with it at all but I changed to my old motherboard and was luckily able to identify that nothing changed and I still get no output, I have checked everything in my system and even changing to old psu again still same problem so the only faulty piece left which I wouldn’t have thought it would be but it is, the cpu is the problem so looking at a new cpu (i5 coffee lake series shopping wooo wooo)
 
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terry4536

terry4536

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I would recommend purchasing a case speaker. Here is an example. In your post you referred to system speaker, but I think there may be some confusion about this. It isn't a computer audio speaker, this plugs into a connection near the front panel connector on the motherboard. Details should be in the motherboard manual.

http://www.newegg.com/Product/Product.aspx?Item=N82E16812201032&cm_re=case_speaker-_-12-201-032-_-Product

A case speaker can verify if the motherboard passes the POST on startup. It can also identify problems with the memory and processor.
 
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terry4536

terry4536

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The motherboard diagnostic will generate a single beep at the PC startup. That will indicate that the motherboard passed the POST (Power On Self Test). If it doesn't pass the test, it will generate a beep code to identify why it failed. The beep code will vary depending upon the maker of the BIOS. AMI is a well known BIOS.

Here is a webpage that covers the various beep codes sorted by the BIOS.

http://www.bioscentral.com/beepcodes/amibeep.htm

For example you said that the CPU was maybe faulty. The AMI beep code for that is five short beeps.


Your stated motherboard's webpage.
https://www.asus.com/us/Motherboards/ROG-STRIX-H270F-GAMING/

Your BIOS
128 Mb Flash ROM, UEFI AMI BIOS, PnP, WfM2.0, SM BIOS 3.0, ACPI 6.0, Multi-language BIOS, ASUS EZ Flash 3, CrashFree BIOS 3, F11 EZ Tuning Wizard, F6 Qfan Control, F3 My Favorites, Last Modified log, F12 PrintScreen, and ASUS DRAM SPD (Serial Presence Detect) memory information.
Click to expand...



Note: I don't know anything about the "old" motherboard that you mentioned.
 
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Fletcherevo716

Commendable
Dec 17, 2016
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1,510


 
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terry4536

terry4536

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Mar 28, 2010
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If there was no beep at all (and the case speaker works), that means the motherboard diagnostic didn't pass POST. Either the case speaker isn't functional or the motherboard isn't functional. You can test the case speaker on another motherboard, but note that case speaker 4-pin connector has to be oriented the correct way to work (try switching the connector 180 degrees). The connector is a 4- pin connector , two dummies, a positive lead and a negative lead.
 
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