why my computer is turn off suddenly?
964139
hibernate and sleep may not be compatible with your mother board also about turning of it may be because your cpu is running too hot and its a safety mechanism remove your cpu heat sink clean the cpu with dry toilet paper put some new thermal grease on the cpu spread it evenly over it and replace the heat sink\n\nthis should sort the problem
485924
Your screen has gone to standby to save power, just wiggle the mouse or click. and it should come back. You go into your computer options and change the preferences so it will not do this as much or not art all
361007
could be a hardware or heat related condition. if the fan for the cpu stops working, the cpu will get too hot and the computer will shut it's self down.
1127831
This can often happen when you have the active desktop turned on.  Right-click the desktop and turn it off.
332938
It could be that your fan has burned out.  If you notice the fan does not come on at all anymore, it's probably time to get a new one.  \n\nSide note... if your computer is in a room that tends to get warm, you're going to want to change that fan soon and/or use another fan (small household oscillating type) to cool your CPU unit.  If your system gets too warm, the whole thing will shut down till it has a chance to cool down again.
285996
IF you are not getting the message " It is safe to turn off " There may be different reasons \nyou can use the scan disk to scan the harddisk for errors or bad sectors. \nThere may be some process which is running in the background which does not allow the system to shut down. you will have to find out .
36502
Go to Acesseriores and go to system restore and restore it to a earlier time when you didn't have the problem.  This should resolve the issue from turning off.
666012
On a laptop, it shouldn't affect the computer, provided your battery is in good working order.  If your laptop's power supply failed, your batteries should kick in until AC power is restored.  If you think it's your power supply, try to get another one to see if it happens with that one.  If that's not the case, then it may be an internal issue (overheating, for example).\n\nOn a desktop, though, the power supply might be a cause, but then again, viruses, a bad motherboard, or overheating could also be causing your computer to reboot spontaneously.  You'd have to take more notes when it happens - does it happen when you do a particular thing (maybe a virus) or after a certain period of time (maybe a virus or a heating issue), or is it completely random (power supply may be working intermittently)?  And then, after your computer shuts down, does it come back up immediately or does it take a few minutes to start again (maybe a heating issue)?  I would check for viruses first before getting into the case.  If I went into the case, get some compressed air and blow out all the dust, and then see if all your fans are working properly.  And if that doesn't help, try another power supply if you can.
333311
"(shut all electricity off from your computer, i.e. pull the plug)"\nLol thats after you've turned off your computer that is. Don't ever unplug/turn off the computer with windows running if you can help it. Doing so might result in damaging system files preventing windows from working properly or starting at all.\n\nIf a reboot doesn't help try deleting your internet cache. If your using Internet Explorer open it up and click on Tools - Internet Options - Delete Files - Ok. Its also got a button to delete cookies that may help. Failing all that try getting a new copy of Shockwave flash off the internet (macromedia.com?) and installing that.
1115328
shut down and return?\nOr leave your computer on and return? It could be a whole host of problems. Thats not enough information to really go on.
652781
here mizmel try this one \n\nits a little secret \n\ngoto your "start bar" then your "control panel" \n\nclick "system"\n\nclick "Advanced"\n\nclick "Start up and recovery" then click settings \n\nthen under "system failure" uncheck "auto restart" and click apply\n\nlol this wont turn your computer off if it farks over pretty bad, it will display the error message.
914800
The laptop will go into a slight 'nap' which will mean that it won't heat up because it is not really running any programs. It is like it is taking a rest from it's work. When you switch a computer off it is like a human sleeping.\n\nHope this Helps
538599
It sounds like it is staying in Standby Mode.\nRight Click Desktop> Screen Saver> Power>   System Stanby and Hibernates to (NEVER).\n\nGo to to system Setup. Restart your system and press F2.\nand set power Management.\nHarry
906662
You may have damaged your computer by shutting it down improperly.  You must always use the Start &#92; Turn Off Computer, etc. routine to shut it down.  If you still have the original Windows CDs, you could try repairing the system but I'm not a technician.\n\nGood luck!
586652
If this is a problem that started out of the blue without you touching any of your settings, chances are there is a problem with either your motherboard, graphics card or processor. I had this same problem and it turned out that my motherboard had burnt out.\n\nI don't know how old your computer is but if it is more than 3 years old, chances are it is burnt out and you will need to replace your base unit.
1159386
turn off the computer
176164
If your computer is making a noise when it comes out of standby, then that is probably your hard drive restarting. The hard drive is shut off during standby.  It's normal.\n\nAs for why it's taking so long to think, then I agree with the others.  More RAM usually fixes that.