When i switch ON the PC it start but after some time it switch OFF but power indicater continuosly on & cpu fan not running & when i rboot the sys but it can't reboot only power LED ON

check your PSU, i guess PSU not supplying power properly. if it is ok then replace your CPU Fan.

vote me if found helpful.

hello

if its the CPU fan is making loud screech noises, its time to replace it

if the power supply fan is making the noise, its time to replace power supply , 5188-2859 is HP part number $25-$40

CPU fan = 5188-3722 HP part number , costs about $40-50

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windows is not booting high Temp.
problem with Cpu fan chaque proccessor fan it running or not. if it running refix the cpu fan . Clene & peste apply on it . it Reduce the temparatur of machine window Able to start booting, if Same issue than replace the cpu Fan,

Very well could be overheating or powersupply problem. Most Definately Hardware related. You can try opening up the case and blowing air into it from compressor. (Make sure to do this outside away from clean items). Also, check CPU fan and heatsink to make sure fairly clean. CPU fan may also be old and need to be replaced. Don't put case back on and try again. Look at CPU fan to see if moving (or struggling). If computer stays on longer then CPU fan most likely the problem. If off in same time as before then most likely the main power supply problem, in which case the only way to check this is to replace the power supply. Hope this helps, Best Regards,

Hi,

Try to clean CPU exhaust system with blower.
Check Temp. range in BIOS.
Check CPU fan function in BIOS.
Use flat surface to place and use laptop.

Regards;
Hasan

sounds to me like your mainboard is bad, i bet if you closely inspect the capacitors around the cpu one or more is bulged out or leaking

Which fan are you referring to? As far as I know the fan in the power supply runs at the same speed at all times. So if that is the fan you are hearing it may indicate that the power supply is failing. The power supply may be over heating and shutting down. I would try a different power supply if you can get your hands on one.

This might be caused by the adware /spyware or any tro.. virus. pl check the sys32 folder in safe mode. and go to msconfig ->startup tab and disable all and reinstall the sys. sys will be bootedup. if fails then reinstall the OS.

Replace it and let us know if it still happens with the new one.It shut down because of overheating, I hope it didnt mess up your CPU.

sounds like a power supply problem, or an overheating problem. Is the cpu case expelling hot air? open the case verify that is has at least 1 working cpu fan. It should also have at least 1 other fan inside the chassis.