Member Avatar for subster

mobo is a chaintech vn4 ultra 939 socket
proccy a 939 3700+
1 stick of 512ddr400 ram is in it
a 420 power supply

everything is hooked up including the front panel stuff, i turn on the power and hit the switch nothing happens. i only hear the Powersupply noise.


i need help :(

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  • Latest Post Latest Post by Catweazle

Dani AI

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Quick, ordered troubleshooting for a new build that will not power on. is right to question CPU seating, was correct to flag compatibility/BIO S issues, and 's referral to the pinned checklist is useful — run the short, practical steps below in order to isolate the fault fast.

  1. Basic checks: confirm mains switch and power cable/ outlet are good. Try a different known-good cable or outlet before anything else.
  2. Rule out the case switch: disconnect the case power switch and momentarily short the two power pins on the motherboard header (or swap with the reset switch) to check the header itself.
  3. Verify primary power connectors: reseat the main ATX connector and the CPU power connector near the socket. A loose CPU/ATX feed often produces no-start symptoms.
  4. PSU quick-test: if shorting the power pins does nothing, either try a known-good PSU or use a PSU tester (paperclip test only for a very quick check; it does not confirm operation under load).
  5. Minimal bench test: outside the case on a nonconductive surface install only CPU+cooler, one RAM stick in the recommended slot, speaker, and PSU connections. Power that minimal system and watch for beep codes or POST LEDs. Add components one at a time if it posts.
  6. Inspect for shorts and physical damage: look for extra standoffs, stray screws, bent I/O shield, and inspect the socket/pins (or CPU pads) and RAM contacts for damage or misalignment.
  7. Compatibility/BIO S: if the board needs a newer BIOS for the CPU, the board may not POST until updated — consult the motherboard CPU support list and vendor options for a BIOS flash.

Take ESD precautions, power down and unplug before swapping parts, and if the board still shows no signs of life after these ordered checks, the fault is most likely the PSU or the motherboard and should be tested/swapped or RMA'd.

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Member Avatar for Mr. M

Chip on seated properly?

Member Avatar for manutdrule1990

Hi,

Are you sure your motherboard can hold you processor, are you sure they are both copatible because ive heard of some processor having just that bit too much power for the motherbaord!

Hope this helps!

Dave.

Member Avatar for Catweazle

Work through the pinned 'Read this first' topic in this section and report back regarding where you've isolated the problem to please.

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