hi got a prob my computer was running all ok yesterday . but today on startup its saying no signal to the monitor . i have tryed a spare grafic card that i had lying around . still no luck . the fan on the grafic card runs ok . i am not getting the bleep on start up either . hard drive seems ok i have tryed a different one as well still no joy. any ideas ??????

Dani AI

Generated

Given the troubleshooting already performed by and the suggestions from and , here is a focused, safe diagnostic path that narrows the cause toward motherboard/BIOS/PSU issues and the quickest checks to run next.

  • Attach or confirm a working motherboard speaker and note any beep patterns. Beep sequences are BIOS-specific; record the pattern and consult a POST/beep-code reference for your BIOS vendor (Power-on self-test).
  • Reset CMOS (power off, unplug, remove the coin cell for ~60 seconds or use the board jumper). After removing power, press and hold the case power button briefly to discharge remaining charge. This clears corrupted settings that can stop POST.
  • Verify the PSU without opening it: use a dedicated PSU tester or measure the 3.3V/5V/12V rails with a multimeter while the system is powered. If unsure, try a known-good PSU—faulty rails often give intermittent or partial power symptoms.
  • Inspect the motherboard closely for bulged or leaking electrolytic capacitors, scorch marks, bent CPU-socket pins, or loose standoffs that could short the board. Physical faults are a common silent cause.
  • Do a minimal bench boot on an insulated surface: motherboard, CPU+cooler, PSU, and only the components needed to POST (try each memory slot/module in turn). Use a known-good monitor and cable and confirm the monitor input selection.
  • Check the case power-switch wiring; briefly short the two power-switch pins on the front-panel header to rule out a faulty switch.

Document the motherboard model and BIOS vendor and report any consistent beep pattern or LED POST codes — that information allows precise code lookup. If these steps are uncomfortable or inconclusive, a local repair shop can quickly test PSU and motherboard with shop equipment.

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No beeps on startup?

I was going to point a finger at your memory but...

I'd still take out your memory and put it back in and try again.

i tryed that with no difference . but i did try a different hard drive and got a succession of bleeps . think it was 2 and then 4

i think your computer is in loose contact ,that is ormally a single beep sound at the time of start up is normal but when your ram is in loose condact or not connected properlly your system will not start to work and no thing will be shown in your moniter also,so remove your ram and reinsert carefully then restart

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