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Ok so Ive built this PC out of nothing and everything works but screen wouldnt show well thats weird? because i can hear all fans buzzing and that tells me the motherboard is fine but still theres no screen can anyone help please
From RobertHDD

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A compact, prioritized checklist to isolate startup/display failures on a new build. As noted, the next steps should separate power, board/CPU, memory, GPU, and monitor so the real fault can be identified quickly.

  • Minimal POST (bench) configuration: motherboard powered by the 24‑pin and CPU 4/8‑pin only, CPU + cooler, a single known-good RAM stick in the primary slot, and the video device required to get a display (or the board’s video output if available). All drives, front-panel USB, extra cards and peripherals should be disconnected.
  • POST/beep diagnostics: confirm a motherboard speaker or onboard POST LEDs are present. If no diagnostic output is available, clear CMOS (power off, unplug, remove battery for 60s or use the board jumper) and try again. Refer to the board manual for LED/Code meanings.
  • Power checks: verify both the main 24‑pin and the CPU 4/8‑pin are fully seated and that any GPU 6/8‑pin connectors are plugged in. If possible, test with a known-good PSU or a PSU tester.
  • Memory and seating: test each RAM stick solo in the manufacturer-designated primary slot. Reseat modules and the GPU; try a different PCIe slot if one exists.
  • Video path and cables: verify the monitor and cable on another system. If any adapter (digital↔analogue) is being used, test with a native digital cable (DVI/HDMI/DP) or a different monitor. If the motherboard has onboard video, test using it (or swap the GPU into a working system).
  • Physical and assembly checks: inspect for standoffs in the wrong place or metal contact under the board, confirm the CPU socket/pins look normal (only remove CPU if comfortable), and ensure the front‑panel power switch is wired correctly.

If the problem persists, report the exact motherboard model, PSU model/wattage, RAM specs and count, GPU model, and any POST LEDs/codes observed so further targeted steps can be suggested.

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Member Avatar for rubberman

Just because it makes noises and the fans run doesn't mean the mobo is fine, or anything else. Do you hear any beeps when it starts up? Does it use an internal video adapter built into the mobo, or do you have an external video adapter, or both? How is the monitor connected? VGA? DVI? HDMI? If DVI, are you using a DVI-D or DVI-I cable? What does the monitor take?

Member Avatar for RobertHDD

No beeps its fine its got a brand new GPU in it and its got a quad core and im using VGA

Member Avatar for rubberman

No beeps means not fine... Video adapter info? Answer my questions please if you want some help. I am a certified technician and electrical engineer. I make no assumptions about your background. I have been factory trained by IBM, AT&T, Apple, HP, and others and have a 30+ year career in computer systems, both hardware and software.

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