Recently my pc shuts downs completely for no reason-any ideas why?
595214
i would also check for spyware, do a scandisk/defrag this should help
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.
319014
OK you do not provide a lot of information as to your system.\n\nFirst boot into safe mode by pressing the F8 key once the computer starts to boot. Choose command prompt only and see if it still shuts down.  If it does not that is good.  if it still shuts down, open the case and remove any expansion cards you may have installed except for the video card iof you have one.  Remove and put back in the memeory.  Look for lots of dust in the system also if there is a lot of dust then take the system outside and blow all the dust out with either canned air or an air compessor use care  not to blow too hard.  Pay attention to the poser supply.  After cleaning the computer out and reseating/removing all of the cards and memory restart the computer in safe mode and see if it stays on.  If so it is probably fixed.\n\nIf it still shuts down it is probably a bad power supply or the processor is overheating.  if you feel confident you can reseat the processor and replace the power supply.  If not ask the local computer nerd at work or a friend for help.\n\n\nIf the computer still shuts down it is probably something major.\n\n\nTo make sure a virus is not the problem just disconnect the power cable to the hard drive and boot the system.  if it will stay on but shuts down with the drive booting then there is a good chance you have a virus.  Do you have antivirus software installed and up to date?\n\nhave you tried system restore going back a week or so?\n\nRemoving a virus is a whole different question
466483
You may have fried your CPU. If only the fan was replaced, that is definitely the case. If not, some of the circuits on the motherboard may have been damaged. Basically, if you are going to repair it on your own, start from the CPU and work outward. Hard drives, videocards, RAM, etc are all very succeptibile to extreme heat.\nGood luck!
94019
You are probably shutting it down when you still have some programs running. Close all programs by yourself before shutting it down.
1086786
Somethings to do will be;\n\nOpen the computer and check all cables and connections\nRemove the CMOS battery to reset the Bios\nDisconnect any hardware that you don't need to boot up\nTake the Ram out and then put it back in\n\nIf none of this helps then it is either a power supply problem or the CPU is blown and the only way to find out which one is to remove it and test it with a working one.
658159
try clicking altogether ctrl+alt+delete and click shut down. if it's still not working, you have to contact your pc manufacturer
1120466
This is most likely a hardware issue.  Have you installed any new hardware recently (right before the problem started)?\n\nPossible solutions:\nCheck for new drivers for your motherboard.\nCheck for new drivers for your video card.\nCheck for BIOS upgrades.\nIf you bought your computer from an OEM (e.g. Dell, Gateway, etc.), try going to the vendor's website and see if they released any new driver packages.
877201
Download CPU-z and check the ram.  It will tell you everything about your Motherboard and the components.
936973
Sounds like your processor is over heating...that will definitely shut down your computer.
1145845
There many possibilities, hardware conflict, system over heating, software conflict etc.  try cleaning out the computer with a can of compressed air and monitor your system temp, that would be the simple place to start, if that doesn't work IM e and we can go deeper into the issue.\n\nThat should be worth 10 points
265197
Possibly your power supply fan.  Check to see if it has a lot of dust in it (at the back of your tower).  If it does, then you need to get some anti-static air spray and blow it out.  My Dell used to do that, but I always believed it was because something may have just been loose, and it was the case--all I had to do was tighten it up.  So, if you're computer savvy you could check out the innards to see if the IDE/SATAs are pluged in properly and if your processor fan is getting dusty--do the same to it, if it dusty.\n\nNow if it is more like a 'beep', then that means your computer has encountered an error.\n\nGood luck.
54967
I had a similar problem caused by an overworked power supply unit (PSU) which was cheap to replace, but in reality it's not going to be possible to diagnose over the internet as it could be any one of a number of hardware or software issues.\n\nMy advice would be to call some independent PC repairers. Some offer a no fix no fee service & should tell you up front what the cost is likely to be.
1148876
It is possibly overheating. Check the fan. Check power supply, it could be going out. If not:\nYou probably need to reorder your BIOS by hitting del on startup. If you dont know how to do this please dont try, get help first.\nHere is a search of this problem, choose one of these forums that seems most similar to your system and ask them. They should be able to help. Its hard to troubleshoot a problem on Yahoo Answers as we cannot easily have continuous dialogue.\n\nGood Luck!\nhttp://www.google.com/search?hl=en&q=computer+restarting+over+and+over
1140695
There are a lot of stuff to be said, it could be any:\n- Software Problem:\nError in Windows System Files\n\n- Hardware Problem:\nProcessor over heating\nRAM not working properly\nComputer fans not working properly\nHard Disk Spinning Errror\n\nI recommend trying to repair Windows through the Installation Media Source (the CD) by booting the computer witht the CD, then going into setup mode and choose repair.\n\nOtherwise, try backing up all your valueable data, format the Primary Partition, and reinstall a fresh copy of Windows...\n\nGood Luck
257161
I heard that happening with some anti virus software.\nTry shutting down after deactivating the software.\n\nIf that doesnt help try finding out if its a hardware problem.\nGet a program called "end it all" which will close down all running applications and your computer should shut down, if it doesnt then its a hardware thing.
122228
It may get overheated or some hardware is broken (it can be a HDD,RAM,Video card etc., I think the HDD has a problem). Try getting a hardware diagnostic tool.