If I want to sleep my PC,everything goes as it should, but when the display turns off, PC starts work again. I checked settings in Windows 7, I took out all the USB devices I tried to disconnect the monitor, set the bios, I reinstall the bios, set the factory settings, installed new drivers, unplugged the fans, also disconnect power to the PC case panel ... still wont go to sleep Intel celeron E3400, vga gigabyte 4550 128MB, HDD 500GB WD, 2GB RAM patriot

is it overheating?

Hi,
Are you able to provide a little bit more information?

When it stops working, what do you usually do to get it started again, are you rebooting the PC to get it to work again?

How old is Logitech Keyboard?

Thanks

A laptop computer is typically set to conserve battery power. One of the common settings called standby, sleep mode or hibernation turns off power to the screen and the laptop itself after a preset time limit passes without any mouse or keyboard activity. It can be inconvenient for the computer to shut down while you're working on an open page or during a download. Change the setting if you don't want your laptop to going into automatic shutdowns

Turn the laptop computer on with the power button if it's not set to turn on upon opening. Allow the system to boot up. Open the panel for adjusting the sleep settings. This varies among the popular versions of Windows operating systems. To change the sleep mode setting on a laptop running Windows XP, click the "Start" button, and click the "Control Panel" selection. Choose the "Performance and Maintenance" selection, and click on "Power Options." Click the "Power Schemes" tab, and click the drop downs next to "Turn Off Monitor," "Turn Off Hard Disk," "System Standby" and "System Hibernates." Select "Never" for each drop down in both the "Plugged in" and "Running on Battery Power" columns. Click the "Hibernate" tab and click to remove the check mark in the box next to "Enable Hibernation." To change the sleep settings on a Windows Vista laptop, click "Start," "Control Panel," "Systems and Maintenance" and "Power Options." Then click "Change Plan Settings" under the currently established plan. Click on the "Advanced Settings" tab and select the "Never" option on the "Sleep," "Sleep After," "Hibernate After," "Display" and "Turn off Display After" drop downs. Click the "OK" and "Save Changes" buttons to confirm the settings. To change the sleep settings on a laptop running Windows 7, click the "Start" button, choose "All Control Panel Items," select "Power Options" and click "Edit Plan Settings." Click the drop downs for "Turn off the Display" and "Put the Computer to Sleep." Choose "Never" for both and click the "Save Changes" button.

Sleep mode on a Windows 7 PC saves power without you having to turn your computer off and without losing any work. This option cuts the power to your monitor, powers down the hard drive and pauses all functions until you awaken the computer from hibernation. Whether you have a laptop, desktop or workstation, putting your computer into sleep mode will lower your electric bill and save money! Click the "Start" button in the lower left corner of your desktop. In the lower right corner of the Start menu, next to the "Shut Down" button, is a button labeled with a small, right-pointing arrow. Mouse over the arrow. The Shut Down menu appears. Point at "Sleep" and click on this option. Your Windows 7 computer goes into sleep mode. Wake your computer from sleep mode by jiggling the mouse. There may be a delay of a few seconds before your hardware powers on. All of your open programs are still open and your work is intact, just as you left it before the computer entered sleep mode. Configure your Windows 7 PC to go into sleep mode automatically when it is not used for a certain amount of time. Click "Start" and select "Control Panel." Click "System and Security." Click "Power Options." A menu opens. Click on "Choose when the computer sleeps" and select the number of minutes of inactivity. You can also set a separate time interval to put your monitor into sleep mode. If you set both to 10 minutes, then your PC and monitor will automatically go into sleep mode after 10 minutes of inactivity

Just change the power settings to never turn your monitor off or never put your pc to sleep when idle.

For Windows 7:

Click on Start.

Go to Control Panel.

Go to Power Options.

Click on Change Plan Settings.

Make sure both Turn off the display and Put the computer to sleep is set to never.

Click on Save Changes.

Restart your pc.


The steps should be similar for Windows Vista and Windows XP.

It might be setup to go into sleep mode if it is left idle for a certain period of time. To change the settings click the following(I am assuming you have windows vista or windows 7):
Start,Control Panel,Power options,Choose when the computer goes to sleep(look on the left side),Then adjust the settings to what you wish by clicking the black arrow there.
Also check the "choose when to turn off the screen" in the same spot you clicked Choose when the computer goes to sleep.

your operating system setting are possibly in the "sleep" mode and the display is set for 2 minutes.
1. check the "power options" in the Hardware and sound" located in the control panel for Windows 7. click the link that says " change when the computer sleeps"
2. windows XP check the helps or the power management in control panel.

May be you have set "Changed" the setting of your monitor power. If it's set then try this step and see whether it's helpful to you or not. In Windows 7, Vista, or XP, to change the power management settings. To change power management settings in Windows 7, Vista, or XP: Note: If this doesn't match what you see, refer to About navigation settings in Windows.
For Windows 7 and Vista From the Start menu, select Control Panel. Then choose Power Options.
From the list in the left panel, click Choose when to turn off the display or Change when the computer sleeps.
Set your options. For each action, "Turn off the display:" and "Put the computer to sleep:", you can select times ranging from 1 minute to Never.
Click Save changes.
Windows XP From the Start menu, select Settings, and then Control Panel. Double-click Power Management or Power Options. From the "Turn off monitor:" drop-down menu, select a time from After 1 min to Never. Click Apply, and then click OK.

All the Best!

You can turn Sleep and Hibernate off in Windows but this sounds like it might be your Bios putting the system to sleep. In windows go to power options and turn sleep and Hibernation off but double check your Bios as well for a possible setting there that will put the computer in sleep or Hibernate mode.

Disable Power Management on Windows 7 or Vista If you are using a desktop computer, chances are that you don’t want the computer to go to sleep automatically. This is even more the case if you are running Windows 7 or Vista in a virtual machine for testing purposes.
Disabling Power Management in Windows 7
Start by clicking on the power icon, and open up the More power options:
Under the “Additional plans” section, select High Performance, then “Change plan settings”:
Then change everything to “Never”, and save the changes:
Disabling Power Management in Vista
Disabling power management is simple and easy. First go to the start menu and click on the Control Panel.
Click on the System and Maintenance link:
Then click on the Power Options link:
Then select High Performance:
This will disable the automatic sleep mode, but will still turn off the display. You can click on Change Plan Settings to disable that as well if you want.