Member Avatar for majere6988

i recently left my computer on while i was at work and when i returned it had shut down, thinking that it had just gone to sleep i pressed the power button and it came back on, that is all the hardware, monitor, hard drive, video card, fans, and led's came on. but it didn't beep signaling the start up. does anyone know why this would happen? all my components have power and the computer worked 2 days ago just fine. if anyone has any ideas please let me know. thanks.

  • 3 Contributors
  • 4 Replies
  • 113 Views
  • 1 Day Discussion Span
  • Latest Post Latest Post by d.black.panther

Dani AI

Generated

This is a focused, practical checklist to get past POST and find whether the fault is the speaker/BIOS, power subsystem, RAM, GPU, or the motherboard itself. It builds on points raised by and and adds step-by-step actions that can be done before taking parts to a shop.

Start-safe checks (power off, unplug PSU, ground yourself). Confirm a system speaker is attached to the motherboard speaker header — many builds have no audible POST without it. Remove every nonessential device and USB dongle. With power still off, reseat the 24-pin and 4/8-pin CPU power, the GPU, and memory; then try a minimal boot with only CPU, one RAM stick, and video (or onboard video if available).

Try the following sequence:

  • Disconnect all drives and peripherals; leave only motherboard + CPU + single RAM stick + GPU (or onboard video).
  • Swap the RAM to a different DIMM and slot; try a known-good stick if possible.
  • If there is a discrete GPU, try a spare GPU or remove it and use onboard video (if supported).
  • Clear CMOS (jumper or remove battery for ~1 minute) and retry.
  • Remove the case speaker and attach a small PC speaker to the motherboard header to confirm beeps.
  • If available, test with a known-good PSU or check PSU rails with a meter.

If the board has status LEDs or a debug code display, use the motherboard manual to interpret them. A persistent lack of POST after minimal bench testing (and after trying spare RAM/PSU/GPU) points to motherboard or CPU failure; the board is the more likely culprit. Take anti-static precautions; if uncertain, bring the unit to a repair shop and list the precise steps already tried to speed diagnosis.

Recommended Answers

All 4 Replies

Member Avatar for Suspishio

What is displayed on the screen at power up? You haven't said - you only mentioned the beep.

Does the keyboard flash?

Member Avatar for majere6988

now i have no idea what can be wrong. the monitor doesn't display anything, just a stand by light. the monitor works with a laptop output. the keyboard doesnt have any lights on, but the wireless reciever for my keyboard and mouse has power

Member Avatar for Suspishio

What would I do? In your described circumstances I would put the HDD onto another PC (in a USB enclosure which is a must rather than slaving it) and would run diagnostics on the disk.

Member Avatar for d.black.panther

HI,
If you are still following this thread then I should let you know that its either your MOTHERBOARD or your VIDEOCARD that has gone KAPUT !! From what I can understand you probably don't have a tester, so I would suggest, take your CPU to a hardware store and ask them to check your Motherboard and then your Videocard. The BEEP AT THE START means all hardware is working properly. In your case its not. Replace the Videocard or motherboard or both depending on the result and you should be right. Let me know if you have any more questions.

Be a part of the DaniWeb community

We're a friendly, industry-focused community of developers, IT pros, digital marketers, and technology enthusiasts meeting, networking, learning, and sharing knowledge.