AJR said:
Current power supplies are dubbed "ATX"- previous were "AT" - the
difference - ATX are "software" operated. Power (5 volts) is always
supplied to the motherboard even when the computer is "off". When the
power button is pressed the 5 v is shunted to the power suppky and "turns"
it on. As previously mentioned, to tutn off the computer via the power
button - depress it for 5 to 10 seconds.
Todays' computers when there is a need ofr a restart require a "cold"
restart - power button not a "warm" restart" via a reset button. In a cold
restart 'all" essential drivers and so forth are activated - not so tih a
wasrm restart.
It started well, but derailed in the last paragraph. The reset button,
instigates a system and processor reset and causes it to start executing
BIOS code from exactly where it would have done had you performed a 'power
on' start (part of the power on start process is to provide a reset signal).
Thus the start sequence is exactly the same. All drivers and processes have
to be loaded and run in exactly the same way.
The only difference between the two types of start, is that in the former
case, the system memory will contain whatever was in it when the reset
button is pressed, in the latter case it will be entirely random. In a
PC/Windows environment this never causes a problem (but is not necessarily
the case for other environments).