TURN ON PC SHUTS BACK DOWN less then 1 sec?
820496
It could be a couple of problems. It could be that the processor is overheating and you might need to get a new fan or reapply the thermal glue. It could be a bad power supply or power supply cable. I don't think it is a virus for the simple fact that even the deadly boot sector viruses show signs after it does POST. I would take it into a computer tech shop or the Geek Squad and find out what they say. Good luck.
254966
Depending upon the frequency on how much you turn it on and off in a given time. The newer PCs motherboard does not completely shut down, but goes on deep standby mode, much of the power, even just a trickle, is applied under this condition through the boot sensing channels handled by the bios and accompanying chipsets and sub circuitry without supplying power to the major areas until needed, including the main CPU. any abrupt powering on and off may contribute some possibility of failure, but not necessarily immediate, and may take some time to evidence itself. The switching mechanisms had changed from basic mechanical to digital pulse actuated SCR transistors that are quite susceptible to voltage spikes. The most concern will be noted at the power junction between the power unit and the power interface circuitry on the motherboard. On these aspect much consideration really rely on the quality of what these components are made, and how the circuitry is designed entirely. Therefore, the quality of the components may have a real bearing on the possibility of any failure by repeatedly turning your PC on or off, that could cause a voltage spike at each transition.\n~meow
363560
I had this problem before, I fixed it by reseting the bios to it's defaults, unfortunately I never did find out exactly what bios setting was causing it though. You can take a look under the "power management" section of your bios and see if you can find it, or just do like I did and reset it to defaults.
639372
Press the Ctrl, Alt, and Del keys simultaneously.\nPress them again.\nThat is called a "hot reboot" because the power is not turned off.\n\nShut down your computer.\nStart it up again.\nThat is called a "cold reboot" because the power is turned off.
1054312
Take it in to a shop and have them look at your power supply. It sounds like that could well be your problem. If so, it is a fairly easy fix. Trust me, it happens way too often of late. Good luck.
213533
It´s ´probably just going into "Stand By" or you need more time in your energy savings config. \n\nGo to Start> Control Panel> Display >Screen Saver> click on the energy saver button> there is a combo box that says turn off monitor change that to 10 minutes or 15 whatever you like.\n\nThis gives you more time to levae the computer an d the monitor won´t go off.\n\nhope it helps
66151
If the computer shuts down a short while after trying to connect to the internet then it is probably a virus. To verify that, close your internet connection and leave your computer open. If the problem persists despite having closed your internet connection then it could mean a hardware problem. Use one of the freeware internet programs to monitor your computer's temperature. If all appears normal there, it might be another virus (check for abnormal processes or cpu usage at your process manager) or a recently installed DDR chip that does not quite agree with your computer or a software installation that did not complete quite succesfully. If none of the above is the case I should advise going to the hardware store from which you bought the computer and ask some professional advice
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
926786
This sounds as if your power supply on the PC itself went bad.  Especially if you have checked all your power connections, and you are still on getting power to your system.  \n\nyou may need to contact E machines and see if your system is stll under any warranty.  If you have any Geek friends, have them check it out to make sure its the power supply, and not the motherboard, memory, and/or processor.
112486
It could be many things.... start by disconnecting  your Hard Drive... if it still restarts and does not let you stay in the bios try a new Power Supply... if persist its most likely your motherboard... make sure to disconnect  everything else...
336812
Hold the power button until the computer turns off
1114390
Your problem is probably either a stick of RAM has gone bad (especially if it's the only stick you have), or it needs to be reseated (pressed down on both ends), or your motherboard's battery has failed, which is the most likely, given the age of the computer.
647869
1. Check the fan, if the cooling system is bad the processor will automatically step down its speed\n2. Remove all spyware and viruses by installing a good antivirus software\n3. Make sure you un install all software that you dont need. Any thing that runs in the back ground such as database services etc.\n4. Check how much RAM is currently being utilised and which processes are taking max cpu time. That might give you an indication which program is slowing it down.\n5. Check memory for consistency by doing a memchk from command prompt. Also check that CMOS setup detects the right amount of memory installed (2GB in your case)\n6. Try using Firefox browser. Its more resilient to spyware etc.
564002
there shoudl be a restart button on your cpu.  try that
905272
Goto your CONTROL PANEL and select POWER OPTIONS.  Make sure it is set at a level you want, I assume it says to turn off hard disk after 20 mins...Just change that to NEVER.
658450
your pc is over heating that is why it is rebooting itslef and in due course it is damaging your software...\n\nIn short u have a hardware problem.\n\nwhat u must do ?\n\n1)check the temperature of your pc.\n2)check your fans.\n\nu must call a hardware expert and must install your OS again.
741853
right hit ur desktop hit on properties.  hit screen saver . hit power tab \n che to see it the power settings at da. bottom are set to log in in 5.10 . 5 or 10 min or so check ur cpu fan . that maybe da problem . make sure it is not hot  if so ur need to replace that