Question My PC fails to boot for 3 times

[rakinar2]

I have a DELL OptiPlex 7080 Tower PC and each time after finishing my work on the PC, I shut down the PC after the power button led turns off, and then I disconnect it from the main power supply. But sometimes it causes a bad impact on PC; the PC fails to boot for 3 times, (Then it works) like force restart. I guess that I should wait a bit and then disconnect the power cable. Any idea how much time I should wait?

 

[makethemhappy]

I have a DELL OptiPlex 7080 Tower PC and each time after finishing my work on the PC, I shut down the PC after the power button led turns off, and then I disconnect it from the main power supply. But sometimes it causes a bad impact on PC; the PC fails to boot for 3 times, (Then it works) like force restart. I guess that I should wait a bit and then disconnect the power cable. Any idea how much time I should wait?

Hi, is it necessary disconnectin from the main power supply? Did you try without disconnecting it? Sorry for my bad english.