Question about sleep mode

zachn

New Member
Messages
18
Hey guys,

I've recently started using sleep mode for my PC, no point leaving it on for many hours so I'd rather have it sleep.

From what I understand, Sleep puts the PC in a low state power mode with settings and document saved in the memory.

In my case, when I put my PC to sleep, everything shuts down. There is no "Shut Down" screen, but there are no case fans, no CPU cooling (Corsair H100i) working, no Mobo LEDs, no HDDs working, basically, the PC looks like it's completely shut down.

However, clicking the power button and Windows appears on the screen within 2 seconds.

So my question is, is the CPU running while in Sleep mode? I'm concerned about heat... If it is and the cooler is not running, isn't it dangerous?

I have tried both regular sleep and hybrid sleep and in both cases the PC acts the same, it looks like it's completely turned off, but pressing the power button wakes it up in a sec.

More info on this would be great, thanks :)
 

My Computer

System One

  • OS
    Windows 8.1 Pro x64
    Computer type
    PC/Desktop
    CPU
    2500K
    Motherboard
    MSI Z77A-GD65
    Memory
    2x4GB Corsair Vengeance DDR3-1600
    Graphics Card(s)
    EVGA GTX680 Superclocked Signature 2
    Hard Drives
    SSD: Samsung 840 Pro 256GB
    HDD: WD 4TB Caviar Black
    PSU
    Seasonic X-650
    Case
    Corsair Obsidian 650D
    Cooling
    Corsair H100i
In sleep mode everything is powered down except RAM and a few essential devices. The CPU is in a low power state and is not running. There is no need for the fans to be running. Be aware that if power is lost in this mode it is much like pulling the plug while the computer is running.

Hybrid sleep is much the same except that RAM contents is saved to hiberfil.sys before entering the low power state. There will be no adverse effects from power loss. In that case the system state will be recovered from the hiberfil.sys file. It is a hybrid sleep and hibernation mode.
 

My Computer

System One

  • OS
    Windows 7
    Computer type
    PC/Desktop
Thanks for the explanation :)
 

My Computer

System One

  • OS
    Windows 8.1 Pro x64
    Computer type
    PC/Desktop
    CPU
    2500K
    Motherboard
    MSI Z77A-GD65
    Memory
    2x4GB Corsair Vengeance DDR3-1600
    Graphics Card(s)
    EVGA GTX680 Superclocked Signature 2
    Hard Drives
    SSD: Samsung 840 Pro 256GB
    HDD: WD 4TB Caviar Black
    PSU
    Seasonic X-650
    Case
    Corsair Obsidian 650D
    Cooling
    Corsair H100i
The explanation given is correct, but going all the way back to the beginning, Sleep and Hibernate do not always work as advertised.

To say that both are "Buggy" is an understatement. I can't even tell you, how many times I've read on some Help Forum where a guy says his PC went to sleep and never woke up again. So with that thought in mind, I always disable all SLEEP and Hibernate modes on every computer I set up.

Your computer will be safer and your life simpler if you operate your PC in just two modes.....ON and OFF!
Just like any other appliance.

During Sleep or Hibernation, your power supply is still ON, producing DC power to the motherboard.
If there is a power surge during that time, the motherboard will take the full brunt of it. Not Good!

So what I've been doing for 30+ years, and encouraging all my customers to do, is do a full shutdown of the PC when you're done using it, and then remove all line power from it, like with a switchable power strip, or UPS.
(UPS's will continue to charge their batteries, even when the output is switched OFF.)

There are also, little known, things that Windows needs to do, but can only do during a hard shutdown.

To make the Shutdown process simpler (just one mouse click) I create a Quick Shutdown shortcut on the desktop for all my customers.
That desktop shortcut looks like this:
%windir%\System32\shutdown.exe /s /t 0

Just copy and paste that line into a New Desktop Shortcut and you'll have the quickest and simplest way to safely shut down your PC.

Happy Computing!
TechnoMage :cool:
 

My Computer

System One

  • OS
    Win-8.1/Pro/64
    Computer type
    PC/Desktop
    System Manufacturer/Model
    Acer X-1200
    CPU
    AMD 2 Core
    Motherboard
    Acer
    Memory
    Crucial, 4GB
    Graphics Card(s)
    NVIDEA GeForce 9200
    Sound Card
    On Board
    Monitor(s) Displays
    24" Acer
    Hard Drives
    Sandisk, SSD 500GB
    PSU
    Acer
    Case
    SFF Slimline
    Keyboard
    emachines 101 key
    Mouse
    Logitech Wireless
    Internet Speed
    5 Meg
    Browser
    Firefox
    Antivirus
    Windows Defender
    Other Info
    Using Classic Shell on Win-8.1 /pro/64
Some useful info there... I always used my PC in on and off method but I like the fact that it wakes up and I can resume working ASAP.

I have a very good PSU - Seasonic X 650, I've heard that it has a special protection for power outage situations which disconnects the power from all hardware when a spike occurs and this can protect it from getting damaged.

Is that true?
 

My Computer

System One

  • OS
    Windows 8.1 Pro x64
    Computer type
    PC/Desktop
    CPU
    2500K
    Motherboard
    MSI Z77A-GD65
    Memory
    2x4GB Corsair Vengeance DDR3-1600
    Graphics Card(s)
    EVGA GTX680 Superclocked Signature 2
    Hard Drives
    SSD: Samsung 840 Pro 256GB
    HDD: WD 4TB Caviar Black
    PSU
    Seasonic X-650
    Case
    Corsair Obsidian 650D
    Cooling
    Corsair H100i
Not really!

It's spec's as described by the manufacturer are somewhat impressive for a 'consumer product'.
Remember, it's made to be sold to consumers, as cheaply as possible. It would never stand up to Industrial, military or NASA quality demands. Typically, consumer products are made with 'Hobby Grade' components, just like our motherboards, vid cards, etc.
Witness, all the motherboards and PSU's with bulging capacitors. Eh?

As someone who used to design and build SAFE power supplies, for a living, I do have some experience in the matter.

NO, the only safe mode for any device that's not being actively used, is OFF, with all power removed.

Also, power surges can enter your computer through a phone line or any peripheral device, thus destroying the computer.
In fact, that's the most common path of destruction. I've seen severe surges come through a phone line, and blow the tops off of IC chips on the phone modem and then go into the motherboard and do the same kind of damage there. It can get really messy!

But of course, YOU are the only one who can prevent damage to your PC.

Good Luck!
TechnoMage :cool:
 

My Computer

System One

  • OS
    Win-8.1/Pro/64
    Computer type
    PC/Desktop
    System Manufacturer/Model
    Acer X-1200
    CPU
    AMD 2 Core
    Motherboard
    Acer
    Memory
    Crucial, 4GB
    Graphics Card(s)
    NVIDEA GeForce 9200
    Sound Card
    On Board
    Monitor(s) Displays
    24" Acer
    Hard Drives
    Sandisk, SSD 500GB
    PSU
    Acer
    Case
    SFF Slimline
    Keyboard
    emachines 101 key
    Mouse
    Logitech Wireless
    Internet Speed
    5 Meg
    Browser
    Firefox
    Antivirus
    Windows Defender
    Other Info
    Using Classic Shell on Win-8.1 /pro/64
During Sleep or Hibernation, your power supply is still ON, producing DC power to the motherboard.
If there is a power surge during that time, the motherboard will take the full brunt of it. Not Good!


TechnoMage :cool:

There is no power being used for hibernation. I think you inadvertantly included this.
 

My Computer

System One

  • OS
    Windows 8.1 Pro x64 with Media Center, Windows 10 Pro x64, Windows 7 x64 Ultimate SP1
    Computer type
    PC/Desktop
    System Manufacturer/Model
    Custom System
    CPU
    INTEL Xeon E5-2670 LGA 2011
    Motherboard
    Gigabyte GA X79 UD5 v1.0 F13s
    Memory
    64GB (8 X 8 GB) G-Skill Ripjaws Z DDR3 2133 Quad Channel
    Graphics Card(s)
    EVGA GTX 1060 SC 3 GB
    Sound Card
    Realtek Onboard ALC898
    Monitor(s) Displays
    2 x Samsung S27E310
    Screen Resolution
    1920 x 1080
    Hard Drives
    Samsung 850 PRO 256 GB SSD
    1 x 6TB WD 6003FZBX SATA
    13 x 3TB WD 30EFRX SATA
    PSU
    Seasonic X-1050
    Case
    Thermaltake Armor+
    Cooling
    INTEL BXRTS2011LC Liquid-cooled
    Keyboard
    Logitech G510s
    Mouse
    Microsoft Wireless Explorer Mouse
    Internet Speed
    7.0 Mb/s
    Browser
    IE 11, Chrome
    Antivirus
    ESET NOD32 11.1, Malwarebytes Pro 3.5.1
    Other Info
    ASUS RT-AC68U router
You are 100% WRONG. If the computer is connected to the Main, there is 5v being made in the PSU, otherwise even the Power ON button would not work. It's not really a switch, it's only a momentary contact push-button, like a door bell button.

I've been building computers since 1980, I do know how they work.

:cool:
 

My Computer

System One

  • OS
    Win-8.1/Pro/64
    Computer type
    PC/Desktop
    System Manufacturer/Model
    Acer X-1200
    CPU
    AMD 2 Core
    Motherboard
    Acer
    Memory
    Crucial, 4GB
    Graphics Card(s)
    NVIDEA GeForce 9200
    Sound Card
    On Board
    Monitor(s) Displays
    24" Acer
    Hard Drives
    Sandisk, SSD 500GB
    PSU
    Acer
    Case
    SFF Slimline
    Keyboard
    emachines 101 key
    Mouse
    Logitech Wireless
    Internet Speed
    5 Meg
    Browser
    Firefox
    Antivirus
    Windows Defender
    Other Info
    Using Classic Shell on Win-8.1 /pro/64
Sorry but you can completely disconnect the power from the computer (for as long as you would like) and when reconnected it will resume from hibernate.

No power required to keep hibernate alive since all data is written to the hard drive.
 

My Computer

System One

  • OS
    Windows 8.1 Pro x64 with Media Center, Windows 10 Pro x64, Windows 7 x64 Ultimate SP1
    Computer type
    PC/Desktop
    System Manufacturer/Model
    Custom System
    CPU
    INTEL Xeon E5-2670 LGA 2011
    Motherboard
    Gigabyte GA X79 UD5 v1.0 F13s
    Memory
    64GB (8 X 8 GB) G-Skill Ripjaws Z DDR3 2133 Quad Channel
    Graphics Card(s)
    EVGA GTX 1060 SC 3 GB
    Sound Card
    Realtek Onboard ALC898
    Monitor(s) Displays
    2 x Samsung S27E310
    Screen Resolution
    1920 x 1080
    Hard Drives
    Samsung 850 PRO 256 GB SSD
    1 x 6TB WD 6003FZBX SATA
    13 x 3TB WD 30EFRX SATA
    PSU
    Seasonic X-1050
    Case
    Thermaltake Armor+
    Cooling
    INTEL BXRTS2011LC Liquid-cooled
    Keyboard
    Logitech G510s
    Mouse
    Microsoft Wireless Explorer Mouse
    Internet Speed
    7.0 Mb/s
    Browser
    IE 11, Chrome
    Antivirus
    ESET NOD32 11.1, Malwarebytes Pro 3.5.1
    Other Info
    ASUS RT-AC68U router
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