5
I noticed that after cutting off power supply while the PC is running, some PCs can't be restarted for a minute or so. Why's that?
This is different when pressing the front power button for several seconds. Then, restarting works immediately.
5
I noticed that after cutting off power supply while the PC is running, some PCs can't be restarted for a minute or so. Why's that?
This is different when pressing the front power button for several seconds. Then, restarting works immediately.
10
Certain PSU's have a safety switch built in. This stops the PSU from being damaged when there is a sudden power failure, or a continues power dip that causes the power supply to switch on and off rapidly, which generally destroys the PSU.
I lost 2 older one's like this. Thankfully the newer one's will delay restarting long enough for the PSU to not "pop". This switch is only activated in the case of a sudden power failure. There is an actual patent for this you can read about here.
2For some hard disks there's also the matter of completely stopping the rotation before restart. – harrymc – 2009-10-10T09:22:35.247