T440S Thinkpad laptop can't open even it is charged

Sleep or standby mode should allow your computer to conserve energy yet respond quickly to power back on when you need it. Most Toshiba laptops should exit sleep mode if you press a key on the keyboard or use the trackpad mouse. If the lid was closed, opening it should also wake up the computer. If none of these methods work to bring the computer out of sleep mode, you may have a power issue or software glitch. Causes Insufficient power can cause this problem, so try plugging in your Toshiba laptop before attempting to wake it from sleep mode. If this does not immediately fix the issue, your problem is more likely a software issue. If your laptop was shut down incorrectly prior to the sleep mode incident, it may be stuck on a blank screen that makes it appear to be in sleep mode when it actually is trying to start up.
Indications Press the power button for a few seconds to see if your computer will wake up. If it does, the laptop was not truly stuck in sleep mode, but rather went into hibernation mode. If your laptop is truly stuck in sleep mode, you may be able to force a shutdown by holding down the power button, but when you power back up it will move right back into sleep mode. In some cases, the power button may not shut down the computer from this mode at all.
Solution The best way to solve your Toshiba's problem is to completely remove all power from the laptop to ensure a fresh restart. Close the laptop's lid, turn over the unit and remove the battery. Also remove the power adapter cord from both the laptop and the wall socket. Open the laptop lid and press and hold the power button for approximately 20 seconds. This will drain any stored power in the backup battery. Wait a few seconds, then put the battery back in, plug in the laptop and press the power button to turn on the computer. It may start up with an error screen; in this case, select the option to start your computer normally. If the error recurs, start the computer in "Safe Mode" to see if a program running on your computer outside of the basic Windows operating system is causing the problem.
Further Help Sometimes this issue also requires holding down a specific key, such as "F8," when you restart. If the basic power drain and restart process doesn't work, you can use Toshiba's support website to look up further information for your specific model. Just click the "Product support" tab and enter your laptop's model information, then read through the support bulletins listed for your particular Toshiba model. Toshiba also maintains a support hotline at Call us : +1 850-610-1013 https://www.instantprintersupport.com/toshiba-printer-support

is it overheating?

This is a common problem on HP computers but also has many causes. If your laptop is not coming back on after being put into sleep mode, it could be a software issue among a few other things. If your computer has a hibernation mode I would suggest using it to get around the sleep mode issue. This mode will save everything the way it is and shut down completely. When you restart the computer it will open up just as you left it. Just like sleep mode except with a restart. This does not solve the sleep mode problem but easily provides a power saving alternative to it.

check your power options, both for when running on batt's or ac

Can you access to your account?
Maybe the last time you didn't shuted down the pc and it just went to sleeping mode... try to log in....

the z sometimes means sleep mode which ur laptop is still running but ur harddrive is not in motion as much as it is awake

Leave it plugged in for about 10 minutes. The battery just needs to charge a little more. Then you can come out of sleep mode.

If it is locked in sleep mode. Just hold the power button down to shut off the computer. Let it charge, you can now reboot, and keep charging after about ten minutes.

did you press the power button or just dont use sleep mode just shut it down rate me thnx

press and hold the power button down for about 5 secs. The computer will shut down. Restart it and right click on the desktop, go to properties then look for screensaver tab , then choose power options, click on hibernation tab at the top and uncheck enable hibernation. Or choose stanby options and choose a longer time before the computer goes to sleep.

Do A "Cold" Boot...
Remove The Battery For 30 minutes, And Leave It Unplugged..

With No Battery in and No Charger Cord Plugged In Now, Press and Hold the Power Button Down For 30 Seconds.....

After 30 minutes, Replace Battery and AC Adapter and Attemt to power on "hopefully not in sleep mode"