My laptop shut down on its own

Laptop not shutting completely (Power light and fan stays on ...

www.tomsguide.com/.../laptop-shutting-completely-power-light-fan-stay...

3 days ago - I have to hold the power button for 5 seconds for my laptop to turn offcompletely. ... I tried removing my battery completely, and started the windows with my A/C adapter and then shut it down ... when i shutdown my pc , my pc has get shutdown but the power light in my cpu tower ... Can't find your answer ?

Try running it on a hard flat surface and see if it runs better. The shutting down could be due to the machine overheating due to poor airflow. Try cleaning the air vents around the case, make sure they are not dusty.

What is the exact problem.

A Does it turn off automatically after few minutes Or

B It fails to shut down when you choose to do so ??

If the system turn off automatically, try to clean the cooling vents and make sure that the system is not overheating

If the system fails to shutdown, test the system in safe mode. Restart and tap F8 repeatedly, select safe mode and press Enter. Once it start in safe mode, try to shutdown. If it able to shut down properly then the problem can be with your antivirus software

this laptop is know to have a fan problem you might need to have it replaced, http://esupport.sony.com/US/perl/news-item.pl?news_id=299&mdl=VGNCS115J

Try F8 upon start-up and use safe mode to boot then try a doing a system restore, it may have installed an update automatically that conflicts somehow

go to the powermanagement in the control panel. In it check the settings to turn off system when i press, or shutdown the pc after 30 min change it to never, and turn harddisk off to never. and remove the system from hibernation

if u r using vista sure check the shutdown button.

or press once power button it automatically shutdowns

or hold power button until it shut down

when u close the door it only standby..

Could be hardware or software problems, IF its hardware issue the only problem makes this if the Cpu fan doesnot work, so the Cpu gets hot and then it shutdown in order not to be damaged. but mostly its software issue that remeber if you installed any program before this is happen, and try to stop shutdown by this command, if you did this and this stop shutting down your laptop this is absolutley software problems or programs conflict:
hit Start, then Run , then type this : shutdown -a
this will stop your shutdown if it works, try to uninstall the last programs causes this issue,if it doesnot let you use safe mode command.
Regards

I’m happy to help further over the phone at https://www.6ya.com/expert/mustafa_06f84c65ab5cc745

yes there is, go into control panel>power options and choose how long you want the display and computer to stay on for before going on standby.
Turn of the display> change to four hours
Put the computer to sleep>choose never or select a suitable time for when the computer should sleep

I hope this helps

Could be loose connections on the board where the solder is expanding as it heats up causing a loose connection or something in the power supply or horizontal is over heating and your tv is going into shutdown protection . Good luck