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I just recently assembled a brand new PC. I triple checked to make sure that everything was plugged in correctly. I connected my monitor to my PC and nothing happened, the monitor screen said “No Signal” so I changed the connections. Both my monitor and PC have DVI and VGA connections (btw I connected it to the motherboard), so when the VGA (the first one I tried) didn’t work, I switched it to DVI, which still didn’t work. I also noticed that my mouse and keyboard (which are supposed to light up and connected by USB to the motherboard) didn’t turn on or give a response. And when I tried to plug my phone into the front panel USB ports, those ports didn’t work either. I was starting to think that I missed a plug, or I didn’t plug something in, so I checked again and everything is where it’s supposed to be, all plugged in. Long story short, none of the ports or connections on the motherboard or case are working. And I know the motherboard has power because the CPU fan spins. Any info helps! PC Specs- CPU- AMD Ryzen 3 2200 G GPU- None Motherboard- Gigabyte B450M Case- Cougar MX330G PSU- Seasonic S12111-550 Monitor- Acer G226HQL Mouse- Redragon M711 Cobra Keyboard- Thermaltake eSports Challenger Prime
Hi, You didn’t mention if any RAM (memory) was installed RAM is checked early in the POST (Power On Self Test) procedure, so if there is no RAM, POST will be stopped and there will be no video or anything else as the PC hasn’t progressed to a point in the startup procedure where things are working. If your motherboard has an internal speaker connected (perhaps in the PC case’s front panel) you would get a beep error code indicating a RAM problem. There are speaker connection header pins on the motherboard to which you can connect a speaker so that if there are any beep error codes they can be heard.
Check the power supply unit as well.You may need more powerful PSU.
If none of the ports are working, the motherboard configuration may be the culprit. Are all the ports enabled in your computer’s BIOS/UEFI? If not, try enabling all the ports. Also, try downloading the latest BIOS/UEFI update from the motherboard’s manufacturer’s website. You can use the download to flash the BIOS and update the firmware.
I have the excact same problem but on a gaming rig, allways no signal through dp and hdmi on both monitors, no usb works, back end neither and ram is fine so my conclution is just the motherboard was scratched somehow in the setup
