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Problems with a new build. After installing OS the computer restarts and there is no monitor signal.

Hello guys&girls! I am pretty desperate at this point as I've tried a lot of solutions, many which I've found on this forum but nothing has worked so far. Please excuse my English as it is my second language.

Two days ago I built a PC on my own for the very first time. I had seen and read countless tutorials, tips and had consulted the manuals prior to setting everything up, so I was pretty well documented. (or so I thought)

The rig (I already had 8GB of RAM, HDD and DVD-RW):

Anyway I assembled the components, the computer posted and after Windows 7 completed the installation, the computer restarted (as it should have). The fans were spinning, the led was on but I had no signal on my monitor. After about 30 sec of waiting to see if something happens I pressed the restart button on my case and voila I had signal on my monitor and the installation of Windows was finalizing. At the next restart the same thing happened. Every time I restarted the computer from Windows or the button the monitor didn't receive signal. But it worked if I restarted it again from the case button.

Anyway, I tried 2 monitors (VGA&HDMI) in the video card (not the motherboard) - same thing happened. I installed another OS - same thing happened. I reseated the RAM about 3 times - same thing happened. I took out the GPU and placed it back carefully - same thing happened.

I then remembered that the motherboard has a Qled display and I checked the numbers: when the computer works properly it displays A0 and when the monitor doesn't receive signal it displays 00.

Now, the final solution I am considering is taking all the components out and flashing the BIOS via USB flashback because it says on the manufacturer's website that the BIOS version my motherboard has doesn't support the newer CPU. But the strange thing is that I could see the CPU (name and everything) in BIOS when the computer first started.

I would love to hear your opinions as I am a bit scared, I just managed to raise money for this build and I don't want to break it.

If I need to flash the bios and put the CPU back will this affect the CPU? Can I clear CMOS with the CPU in? And if this wasn't the problem what would be the best course of action?

Thank you in advance!
Dragos
5 answers Last reply Best Answer
More about problems build installing computer restarts monitor signal
  1. Best answer
    1) It can't be a CPU issue because your PC wouldn't even have started.
    *Having said this, perhaps there is some weird conflict. Might as well flash. You don't need to take out any components.

    2) Shut down, remove the graphics card, and attach the monitor to the motherboard instead to use the iGPU.

    *Prior to the above, I recommend you install the Intel video drivers if you have not done so, then check the BIOS just to make sure "PCIe" isn't the only option for choosing video source. "AUTO" is probably best.

    3) Have you tried changing the INPUTS on the monitor settings? It may not be properly selecting the input (may be on DVI for example). Probably not the issue.

    4) Is "DVI" an option to try as well? (You mention VGA and HDMI)

    Summary:
    The more I think about it, the more I suspect the following:
    a) CPU/BIOS issue
    b) Graphics card or Power issue
    c) Motherboard issue

    So flash the BIOS and if that fails, see if it works with ONLY the iGPU. The next step I guess would be to try any other PCIe graphics card.
  2. remove the gpu and see if the problem still occurs...
  3. Thank you very much to both of you for your suggestions! I removed the Gpu and powered up the PC without it and I still have no monitor signal, get code 00 and the red led from the CPU is on. I put the GPU back and connected the monitor to it and the same thing happens. I am thinking it's the BIOS version.

    I will receive some thermal paste and cpu cleaner tomorrow and I will remove everything from the board, power just the motherboard and use a USB stick to do a BIOS flashback and then put everything back. I read on Asus support page that it is recommended a flashback with nothing on the board or an ez flash update with an older (ivy bridge) cpu in, so I will do the first one as I don't have an older intel cpu.

    Any other suggestion or recommendation? Again, thanks for your help.
  4. idragos said:
    Thank you very much to both of you for your suggestions! I removed the Gpu and powered up the PC without it and I still have no monitor signal, get code 00 and the red led from the CPU is on. I put the GPU back and connected the monitor to it and the same thing happens. I am thinking it's the BIOS version.

    I will receive some thermal paste and cpu cleaner tomorrow and I will remove everything from the board, power just the motherboard and use a USB stick to do a BIOS flashback and then put everything back. I read on Asus support page that it is recommended a flashback with nothing on the board or an ez flash update with an older (ivy bridge) cpu in, so I will do the first one as I don't have an older intel cpu.

    Any other suggestion or recommendation? Again, thanks for your help.


    the same thing happened to me on my build except it would keep shutting down within a few seconds and when it stayed running I would get no signal. Turned out I got a faulty mobo and once I replaced it everything worked fine :)
  5. idragos said:
    Thank you very much to both of you for your suggestions! I removed the Gpu and powered up the PC without it and I still have no monitor signal, get code 00 and the red led from the CPU is on. I put the GPU back and connected the monitor to it and the same thing happens. I am thinking it's the BIOS version.

    I will receive some thermal paste and cpu cleaner tomorrow and I will remove everything from the board, power just the motherboard and use a USB stick to do a BIOS flashback and then put everything back. I read on Asus support page that it is recommended a flashback with nothing on the board or an ez flash update with an older (ivy bridge) cpu in, so I will do the first one as I don't have an older intel cpu.

    Any other suggestion or recommendation? Again, thanks for your help.


    ohh yes i missed that you do need a BIOS upgrade i5 4690k haswell refresh would not run in a z87 board until u upgrade the BIOS......
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