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hi guys this never happen to me before i got my pc from like 3 years and every thing is fine i know its the temperature as i downloaded speed fan and check the heat but there is some thing weird there is 2 fans in my pc the big one that in the back of the pc and the one hanging beside the gfx card i checked them but the weird thing that the 2 fans spin normally and nothing wrong with them but the weird thing that speed fan show only 1 fan works not the 2 works ????? there is temp1 in speed fan and this is normaly from 39C to 45C the big problem is with temp2 is go from 48C to 59 or 60C and the HD temp is normal too from 38C to 44C i got a fan beside the cpu and open it now temp 2 go from 46C to 51C i think the damn problem is in temp 2 i just want to know whats fan i have to change the big one or the other one beside the gfx card and this only happened when i play games after 10 minutes the pc reboot here is a picture of the speedfan please help me guys T_T

this is the speedfan pic
[img][/img]

and this is the latest error properties

[img][/img]

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  • Latest Post Latest Post by dcc

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posted a classic symptom set: the system reboots under game load while two case fans are seen spinning but the monitoring app reports only one. was right to point attention at CPU temperatures, but there are a few more practical checks to separate a bad sensor/fan from a real overheating or power problem.

  • Boot into the motherboard BIOS/UEFI and note the hardware monitor values (fan RPMs and temps). The BIOS view is the cleanest baseline and avoids mislabeling that some Windows utilities do.
  • Trace each fan cable. Fans powered directly from a PSU Molex adapter will spin but usually won’t report RPM to the motherboard. A fan on a motherboard 3/4‑pin header should show an RPM. Swapping a known-good fan between headers quickly shows whether a header or cable has failed.
  • Separate CPU vs GPU load. Run a CPU-only stress run, then a GPU-only stress run. If only GPU load causes the reboot, the card or the PSU rail that supplies it is the likely culprit. If CPU load causes it, recheck heatsink contact and thermal paste.
  • Reseat the CPU cooler and renew the thermal compound if CPU temperatures are high or the cooler seating looks marginal. Clean with isopropyl alcohol and follow the cooler maker’s mounting torque/sequence to avoid uneven contact.
  • If temperatures look reasonable under load yet the box still restarts, suspect the PSU. Failing PSUs often cause immediate reboots under high draw even when temps are normal. Testing with a known-good supply or a PSU tester will confirm this.

Note that many GPU fans and temps are only visible to GPU-specific tools, not motherboard monitors; that can explain a “missing” fan reading even when the fan spins. Also collect the system’s event log entries or minidumps: unexpected power loss entries point toward PSU/hardware; bugchecks point toward drivers or overheating. These steps narrow down whether the problem is a sensor/connection, cooling contact, graphics card, or power delivery issue.

Member Avatar for dcc

The temp you want to be concerned about is that of the CPU. I don't trust most utilities to read the temps, but Everest Home Edition is one that consistently mirrors what is showing in the BIOS. It also is specific in what temps are being read.

Have you tried cleaning out the dust and pet fur? As I said previously, the CPU is the important one, make sure that the heat sink and fan a free of dust. While your at it do a visual inspection to be sure that the heat sink and fan are properly attached to the CPU.

What make and model is you computer, if it's a home brew what is the motherboard and processor? How large is the PSU? What graphics card are you using? How much RAM do you have?

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