Dell Inspiron 530S desktop shuts down then restarts automatically
I am working on a Dell 530S that when shut down properly from within Windows, restarts roughly a few seconds after a complete shut down. I have tried everything from updating the BIOS, installing the latest chipset drivers, removing the memory modules and replacing them with new ones, as well as changing the memory module slots, resetting the CMOS, disabling every single power feature within the BIOS, changing the power settings within Windows, as well as changing out the power supply. The computer still turns on after a few seconds. I’ve gotten it to shut down completely once or twice but it will consistently not shut down after I turn it back on again.
This is definitely boggling my mind. Doing a Google search yields very little results with one or two that match the same thing I’m through. The suggestion in those were all related to turning off the power settings or power on settings in the BIOS. I tried it all.
My next guess is simply that it’s a motherboard failure and that a new motherboard is going to be required. There isn’t much more I can do at this point. The strange thing is that this is the second computer within the past month with the same symptom. Although the last computer was not a Dell, it was a Compaq.
I have a Dell Precision m65 that does the exact same thing. I’ve done the chipset drivers and bios updates and checking power management stuff all the same as you. If I pull the battery right when it powers off then it stays shut down for good then. It will usually work okay for a time or 2 then it goes back to restarting on its own.
You are having a heat related problem.
Check to see all fans are clear, vents are clear. Blow out the machine of dust bunnies. Esp look at the CPU fan status. It’s it working?
There are several wild viruses that will also cause a random reboot of a machine.
If the machine is clean and all fans work, try reseating cards and connectors, then run a spyware check.
If you still have a problem do a clean install of the OS assuming you don’t need to backup data.
Command to “reset” a dell machine is CTRL then F11 and release at once. You do this as soon as the Dell logo appears.
Be warned, it will reset to factory specs.
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i also have the same problem with my dell laptop
It was not a power supply and not the bios reset. Not the battery.
What we found was a defective Nvidia Video card. Use the onboard video if Installed. Dell Knows abaut the faulty Nvidia cards but will not Admit it. these cards were mfg with bad solder joints sometimes visible with the naked eye and broken edge contacts.
Try it. Goog Luck.
mine was doing the same but we found it to be a faulty front assembly (power button) part number is wn097. cheap part.