Member Avatar for jovypinoy

Hi Daniweb.com,

My PC shutdown automatically but the green LED light is on. When I press restart button, nothing happens. I need to press the power button for 5 seconds to totally shut it down. Then press the power button again to on the computer.

During Windows loading or sometimes on the Windows Log-in my computer shutdown again but the green LED light is on and I need to do the same thing to shut it off and turn it on.

I don't know the exact problem is. The last things that I did were:
1. I upgrade my RAM from 256MB to 1GB
2. Upgrade my Windows to Service Pack 2.

I brought my computer to the Computer Service Center for check up. And they said that to resolve the issue:
1. They need to install external video card.
2. There's a problem with my motherboard.

These are my computer specification:

Windows XP 2003 Service Pack 2

CPU: Intel(R) Celeron(R) 2.53GHz
Memory: 1GB DDR400 Memory
Motherboard Model: 865G-M8
BIOS Brand - Phoenix Technologies, LTD
Built in Graphics Unit: 96MB Intel 82865G Graphics Controller

Please help me!!!
Any help will be appreciated,
Thanks in Advance

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  • Latest Post Latest Post by benmar

Dani AI

Generated

Thread shows an intermittent shutdown where the front-panel LED stays lit and the system only powers off after a long press; a discrete GPU install did not fix it and the shop suggested a motherboard fault. Forum replies from and pointed at the PSU. That combination (main rails dropping while standby 5V remains) most often indicates a power-delivery problem, but shorts, a bad front-panel switch, overheating, or memory faults can produce similar symptoms.

Recommended diagnostic checklist (priority order):

  • Swap the PSU with a known-good unit or use a reliable PSU tester. Check main rails under load: +12V ~ 11.4–12.6V, +5V ~ 4.75–5.25V, +3.3V ~ 3.135–3.465V; 5VSB should be close to 5V. A working 5VSB with absent/dropping main rails points to the PSU.
  • Run the machine directly from a wall outlet (no UPS) as previously suggested; eliminate the UPS/inverter.
  • Minimal-hardware boot: remove drives and nonessential cards, leave CPU, one RAM stick, and motherboard. Boot to BIOS and watch for stability and fan behavior.
  • Memory checks: run Memtest86+ from USB/CD for several passes and try single-stick configurations.
  • Visual inspection: look for bulging/leaking capacitors, scorch marks, or a burned smell on the motherboard. Reseat the 24/20-pin and 4/8-pin CPU power connectors.
  • Front-panel header: disconnect the case power/reset cable and test the power pins directly (or swap the cable/switch) to rule out a stuck switch.
  • Clear CMOS; consider a BIOS update only after power stability is confirmed.

If a known-good PSU restores stability, the PSU was the culprit and replacing it avoids an unnecessary motherboard swap. If the fault persists after these steps, the motherboard is a stronger candidate. Bench testing and voltage measurements involve mains-level risk; if not comfortable with those procedures, have a qualified technician perform the PSU swap and voltage checks.

Member Avatar for khakilang

Chances are it maybe be the mobo problem. Have you try changing the power supply unit?

Member Avatar for jovypinoy

Not yet. Actually after they install the video card. The problem still there. It suddenly shutdown again..

My computer is connected to the UPS for back up power supply. They advice me to plug the computer directly into the electric outlet instead of connecting it to the UPS.

Do I have to change my PSU?

I will keep you guys updated on this..

Member Avatar for benmar

IT's PSU issue try another PSU... hope it works...

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