computer not shutting down?
957923
i have found its the upgrades getting sorted out as i'am shutting down causes my system to hang or after a defrag \nif after i have upgraded and used my pc to do something else it shuts down properly
828373
The person who built it probably gave it the wrong heatsink which could overheat the processor and shut it down. Check to see what model heatsink he has and see if its compliant with the processor. Or check if the fan on the heatsink is working.
71014
Your computer shutting itself off can be a symptop of 4 things.\n1. Windows power saving settings. This is unlikely to be the problem if you are using the machine.\n2. You're on a laptop that has run out of battery life. Trying using only your power adapter.\n3. You may have a defective motherboard, processor, memory RAM, video card, or powersupply. My suggestion is to always start with the cheapest to the most expensive. I'd try replacing your Power Supply with one of quality with sufficient wattage(not the cheapest power supply you can find). I have found that AMDs are more sensative to power flucutations as when CD-ROM drives and Harddrives spin.\n4. The mostly like possiblity is overheating. As mentioned on here, most new motherboards have a temperature threashold that will automatically shutdown your PC if it gets too hot. I suggest making sure you have sufficient air circulation (cool air coming in from the front, passing over your motherboard, and out through the rear exaust). You should have a quality heatsink attached with thermal paste (helps avoid heat pockets being trapped between the processor and heat sink). On the heatsink you should have a fan that is clean of dust and rotating at its proper top spead. \n\nAnything else is just random and rare cases.
800408
VIRUS!!! :D or mayybe its ur Ram...has to be one of the two.If its a ram problem tho, the pc usually reboots.Unlike u said..it shutsdown.\nThanks,\nColin.
658159
try clicking altogether ctrl+alt+delete and click shut down. if it's still not working, you have to contact your pc manufacturer
877133
Could be a number of things ... if it's a virus you need to remove the hard-drive and "piggy-back" it into another computer for a complete virus scan \nIt could be the Thermal Grease on your CPU has dried out causing overheating, or a cooling fan not working that will shut most newish machines down or it could be something else hardware related
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.
639810
You need to check that particular computer and make sure it is set to "shut down" and not set to "reboot".  That  will probably solve your problem.
265636
Make sure the computer shuts down properly.
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.
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.
683820
well it may not be shutting off.  I have had a similiar problem with my computer and moniters.  It may have something to do with the settings on your computer, such as video drivers, or your resolution may be set too high or too low.  You should try to hook your computer up to other moniters, and see if you have the same problem.  To fix this problem your going to have to find a moniter your computer does work with and change your settings to accomidate the moniter you have hooked up now.
395007
Another common cause of sudden shut-down is overheating. If your laptop is making a lot of noise when it goes down, this may be the problem (or, if your fan is broken, if it doesn't make any noise...). Sometimes these temperatures can be checked in the BIOS, take a look when you restart immediately after it shut down. There are also some programs available for free on the net that can monitor your system temperature.
1187885
Check the fans and make sure they ALL are working. If you have a CPU temp utility, use it. Try starting in safe mode and see if it is still happening.
756312
I think you computer went into stand-by mode. To disable standby, Go to Start>Control Panel>Power Options.\n\nUnder Power Options properties, set power schemes to 'Always On'. You shouldn't have anymore problem after doing this.
674561
Sounds like your processor is overheating and the laptop is shutting down to save it.  Make sure that the way you sit with your laptop does not block its fans.  If you're not blocking the fans and your laptop is still under warranty, then take it in and ask them to do some stress tests on it.  Tell them there might be a cooling issue on your processor.
664009
Maybe your power supply just failed or something isnt snuggly plugged in. It could be that something got caught in the fan and it shut down from over heat automatically