Member Avatar for Glasgow

Hi again,
I have purchased a new MOBO, An Asus P5N32-E SLI Plus.

I have rebuilt system only putting one hard drive, one ram stick, and 1 graphics card in, it posts and reads hardware but, will shut down within a 30-45 seconds....

any ideas

Pentium 4 dual core
1gig ram pc 4200
Gforce 7600


Glasgow

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Dani AI

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Thread contributors , , and explored the usual quick checks for a build that posts but then powers off. The short checklist below consolidates a safe, prioritized workflow and a few practical checks to gather evidence when the fault is intermittent.

  • Reproduce and record: note exact time-to-shutdown, any beep codes or motherboard POST LEDs, and whether fans/spindles stop instantly or coast down. Photos of jumper/screw placement and connector routing help later.
  • Cooling and fan monitoring: confirm the CPU cooler is mounted evenly and the fan is connected to the CPU_FAN header so the firmware can read RPM. Avoid overtightening; reapply thermal paste only if the cooler is removed.
  • Power delivery: verify the 24-pin ATX and 4/8-pin CPU power connectors are fully seated. If available, swap to a known-good PSU or use a PSU tester/multimeter to check rails before deeper board work.
  • Minimal boot and memory checks: attempt POST with the minimum parts (one stick, no drives, onboard video if present). If stable, add components back one at a time. Use a bootable memory tester when possible.
  • Board inspection and firmware: clear CMOS, check for bulging capacitors or standoffs shorting the PCB, and capture any POST code/beep patterns. If the system can stay up, update BIOS only with a stable power source and the correct vendor file.
  • Safety and escalation: always disconnect mains before reseating heavy components. If instability persists after the above, consider RMA for PSU or motherboard.

These steps turn a transient symptom into measurable data and will speed diagnosis or warranty support.

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Member Avatar for Glasgow

Found the problem, re seated CPU fan and all is okay

Glas

Member Avatar for niranjan9866

Hi:) i think check ram is seated properly. Problem arises from ram. And if it won't work motherboard is the final problem.

Member Avatar for PcTestCard.com

check the CPU temperature.
And swap the RAM slot.

Hope this helps!
Bill

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