i have a problem with my pc that it shut's down automatically due to some power failure,so as far as my knowledge is concern that it happens due to smps problem,because it is not running more than 2 or 3 minutes,and it is producing some kind of music tone,so please help with the problem,whether i should change the smps or the hardware installation of the pc is not correctly.
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so, it automatically shuts down? try turning on your pc and do not wait for it to bbot to windows. instead, immediately tap on F8 key several times as soon as you see that there is power. it should lead you to Windows advanced options menu, highlight disable automatic restart on system failure using your down arrow keys then press enter. it should start normally or if problem still persists, try safe mode instead. it would isolate the issue. if in safemode it will still shutdown automatically then you need to replace your harddrive. if not, then you should just reinstall your operating system to have your system work fine.
it seems that your computer restart when you attempt to shut down. this problem due to short in power button in the cabinet. open the right side of the cabinet.most probably there will be red&white twisted thin wire from front panel for power, the colour may vary manufacture to manufacture.be carfull with it. see at left bottom of your dell PC mother board the wire will lead to two pin specifying power, restart, hdd etc.. short it with your screw driver. if system turn on then it is problem with switch replace it or if it not work then reboot the os.
Try booting up the computer pressing whatever key the Dell needs to boot into BIOS (F10, Delete key, F1...pay attention to the screen) and leave the computer on for about 15min. See if it cuts off then. If it does its more than likely your power supply. If it doesn't then its not hardware related.
It was a faulty or worn out power supply fan. I just replaced it and the computer has been running for about an hour and a half and still no shut down. The system temperature is stable. It runs quieter now. New fan cost 13.88CAD.
That is a power failure, please try change the power supply..or test the voltage in the wall outlet if it rate 220 volts if not then power supply is the main causes. Sometimes the software's got conflict due to virus infections.
try to scan your computer with a potent antivirus maybe it help.
Many has this problem. 1. The main reason behind this problem is that your system is experiencing "system failure".
To overcome this problem, First Go to start->right click my computer->click the advanced tab, go
down to startup and recovery-> uncheck the "automatically restart"
Now your computer will not restart while experiencing the "system failure". Instead of the restart you will get an error message which can help you diagnose the source of this problem .
2. The other reason may be the power supply(SMPS). Make sure that sufficient power is provided for all the parts of the CPU. For eg: If you are having any high end graphics card, that will consume more power and there are chances that the power supply will get educd to other parts. So make sure you have SMPS( power supply) sufficient enough. Also you can try with higher power SMPS.
3. It may also be due to the heat produced that you might want to look into that, check in the bios setting for
you temperature right after the computer shuts down. You might need a
better heatsink or more fans in your case.
4. It might also because of virus ,so try an updated antivirus and scan your system.