Computer shuts down at any time on its own.i then have to reboot by restating the button on the tower.

Maybe something is defective from the factory? Can you bring it back and exchange it for another? Is it a desktop or a laptop? If it's a desktop, maybe remove a side panel and aim a small fan at the inside. Do you know how to start up your computer in safe mode? Maybe try starting it in safe mode and see if you can do a system restore, do you know what that is and how to do it? Google will explain it to you, but I'd suggest those steps.

If you turn off the computer by holding the power button down for 15 seconds, then turn it back on, it will reboot.
I'm not sure this is your question. Could you restate it?

I do this for fun & feedback not $$$
Jim

Reboot essentially means restarting the computer. This is two types
1. Warm Reboot: where you go to start on windows task bar and choose shut down but when prompted choose restart. This way computer shuts down momentarily and restarts!
2. Cold Reboot: By this means you choose to shut down and again when prompted choose shut down! This makes computer off completely until restart by pressing power button.
Booting is computer Lingo for above procedures!

Try restarting your computer, when you have the system up check your power management features.

Hope it helps!

HI,

In this new tower you are swttching to, does it have it's own power supply? And if so, what are the amps, and what are the amps on your old power supply? I have the K8N, and it needs at least 450W to run decent. Let me know?

Mark

Hi,

Read the Below Guide How to Reboot :-

http://www.ehow.com/how_4479754_reboot-pc.html

Let me know, if needed further assistance.

Hope i helped you.

Thanks for using ' Fixya ' and have a nice day!!

There are many reasons why a computer may freeze or completely crash. The most common reason is an overload in the memory. Computers have a set amount of memory to work with (this is their RAM, or "Random Access Memory"). If you attempt to do more with the computer than it's capable of handling at one time, it may "crash" in an attempt to save itself. Generally, the cause of this is generally that too many programs are running at once for the computer to handle. If you are not using a program, close it. Conflicts between programs are other well-known reasons for crashes. Programs such as virus detectors are notorious for conflicting with other applications and utilities. If you notice that crashes are occurring while the same two programs are running, try to avoid running these two programs at the same time.
What Can I Do?

1. Take Notes
   Your first step should be to pay attention to what was happening at the time of the freeze or crash. Try to isolate the program that may be causing problems (this can help prevent a further, more damaging, crash). Is there a history of problems with a particular program (or combination of programs) on your computer? Were too many programs running at once? Was it a particular task you were trying to do? See if you can form a hypothesis about the cause. By understanding what may have caused it this time, you can attempt to avoid future, similar occurrences.



2. Try to End the Program
   Windows provides a "Task Manager" that lists all current programs in operation. In Windows 9x & ME, this menu is brought up by pressing Ctrl + Alt + Delete at the same time. In Windows 2000, after pressing Ctrl + Alt + Delete, click the "Task List" button. In this menu, you can attempt to individually close programs that are causing problems. If programs are unresponsive, Windows will attempt to notify you of this in the Task Manager.
   If you are able to effectively close the program causing problems, save your work in all other open programs, and reboot your computer. This will help to prevent further crashes, and give your system a clean slate to work from again.
   
   
3. Reboot
   If you are not able to effectively close the program in question, you have several options. Please note that any changes in unsaved documents WILL be lost in a system reboot. With the Task Manager open, try pressing Ctrl + Alt + Delete once more. Windows will attempt to reboot itself.
   If the Task Manager does not respond, you still have a few options. Check your computer's tower to see if there is a "Reset" button (it will be in the general area of the normal "Power" button, and should be slightly smaller than it). Press the "Reset" button, and your computer should reboot.
   If you are unable to find the "Reset" button or do not have one, there is one final option to pursue. Find the "Power" button on your computer's tower. Press and hold this button. You will need to hold it for a few seconds (sometimes up to ten full seconds). At some point, your computer should shut down completely. If nothing happens, keep holding the button. Do not press and let go without giving the computer a fair chance to shut down.
   

I would test the memory. Also I think some computers will shut down if the fan on top of the CPU quits working. Or maybe one of the other fans or the Hard Drive quit and is drawing too much juice causing the PSU to shut down. It sounds like something may be grounding.

reseat the keyboard connector to the pc or try another keyboard

Constant rebooting of a computer can be cause by alot of reason the most common for this is due to oevrheating, to check if this is a overheating problem try to open the case of the tower and put a electric fan in front of the tower to coll it down then power ON thecomputer and if it booted up fine with a electric fan blowing on the tower we're sure that you need to add some colling device on the computer tower, But if still do the same thing the problem here is the power supply unit it needs a replacement already....