Disable automatic updates Windows 10 ...HERE

MrWizard wrote:

joebedford wrote:

MrWizard wrote:
your PC ... might even being doing things you don't know about
all sleep does is blank the screen and pause user opened programs/windows
background processes keep operating

I believe that is incorrect. If the CPU clock is stopped, there are no background processes running.

Yes, certain hardware might be running some very low level firmware to monitor when to tell the CPU to restart but those aren't "background processes".

and just how are you going to know that the cpu clock is stopped ?

Hibernation stops everything, stores data and program points on hard drive and shuts down

sleep does NOT do that, un plug your laptop power supply, put in sleep walk away for two days, come back and check the battery
you might it dead and the laptop unable to boot

Take a look at this quote from Wikipedia, not the most reliable source but accurate in this case and better written than I could have done). S1 is the lowest (First) level of sleep state for a computer, (barely asleep) but none the less the key is "CPU(s) stops executing instructions" = no brain, no workie, this is part of the specification all hardware manufactures follow. If it is asleep, the brain is off. The only other possible scenario is S0 where the monitor is off and all background task are running. This is not a sleep state however and if you close the lid on a laptop it always goes to at least S1 unless you specifically change the settings in the OS to tell it not to sleep when the lid is closed.

G0 (S0), Working: "Awaymode" is a subset of S0, where monitor is off but background tasks are running.
G1, Sleeping: Divided into four states, S1 through S4:
S1, Power on Suspend (POS): All the processor caches are flushed, and the CPU(s) stops executing instructions. The power to the CPU(s) and RAM is maintained. Devices that do not indicate they must remain on, may be powered off.
S2: CPU powered off. Dirty cache is flushed to RAM.
S3, commonly referred to as Standby, Sleep, or Suspend to RAM (STR): RAM remains powered.
S4, Hibernation or Suspend to Disk: All content of the main memory is saved to non-volatile memory such as a hard drive, and is powered down.

G2 (S5), Soft Off: G2/S5 is almost the same as G3 Mechanical Off, except that the power supply unit (PSU) still supplies power, at a minimum, to the power button to allow return to S0. A full reboot is required. No previous content is retained. Other components may remain powered so the computer can "wake" on input from the keyboard, clock, modem, LAN, or USB device.
G3, Mechanical Off: The computer's power has been totally removed via a mechanical switch (as on the rear of a PSU). The power cord can be removed and the system is safe for disassembly (typically, only the real-time clock continues to run - using its own small battery).