Rebooting when try shutdown

Of the "options" list, Select start windows normally as per WacoJohn's notes...

Hi,
Dell not given facility to reboot. But command through you can reboot . To access the command prompt window from Vista or Windows 7:

1. Go to the Start menu
2. Type cmd in the Search field
3. Press Enter

On a Windows XP computer:

1. Click the Start menu
2. Choose Run
3. Type cmd
4. Press Enter

From an open command prompt window, you can type shutdown, and then the option you wish to execute.
To shut down your computer type: shutdown /s
To restart your computer type: shutdown /r
To log off your computer type: shutdown /l
0r
press down window key with and two time press "U" key.

Sounds like you have a faulty memory module. Try installing the old memory or if already installed remove the new module(s) and try rebooting. May have to set BIOS depending on computer model.




-AAT

That's like stating my car was going down the road, then suddenly died. What is the problem?

Open the hood, take a look. Maybe it's something obvious.

Same thing with a computer.

1) Computer unplugged from power, open the computer case. See if the Processor fan is dirty, and the computer case fan/s.

If so use a can of compressed air for computers, and clean.

[NOTE*
BEFORE you reach inside your unplugged from power computer, observe Anti-Static Precautions ]

2) See if there are Electrolytic Capacitors on the motherboard.
Bad capacitors for the motherboard voltage regulator circuit, will cause rebooting.

How to identify bad capacitors,

http://www.capacitorlab.com/visible-failures/index.htm

The motherboard Voltage Regulator Circuit,

http://www.hardwaresecrets.com/article/616

Example;

http://www.youtube.com/watch?v=KN6_-8fYHo0

(Starts at 0:04)

3) Power Supply

Weak Voltage power rail. Caused by failing Electrolytic Capacitors.
(Radial Aluminum Electrolytic Capacitors)

Click on start - turnoff and then restart computer. IF unable to shutdown and restart using windows tried hard shutdown.

To reboot a windows computer with Windows XP, click the Start button in the lower left corner, then click Shutdown, then Shutdown again in the popup box.

For a Windows Vista machine, click the windows Orb in the lower left corner, then the small arrow next to the lock on the bottom right of the start menu then click shutdown.

If you need to manually power off, hold the power button down for 5-10 seconds until the computer itself shuts off. This is only for when traditional methods do not work.

usually holding down the power button for a long time will force a reboot. I am not sure if that is what your asking

Try replacing the motherboard battery.

When you click start, turn off, do you get the option to restart? Or do you have maybe a little arrow in the corner like on Vista that allows you to change options?

If you get really annoyed and really just want to restart right now, you can open up run (Start>Run)and type shutdown -r or command then when MSDOS Command comes up type shutdown -r.

At what point does it reboot? Before or after you see the Windows screen? If you see the splash screen then it reboots, it's a Windows error, very likely, best solution would be to reinstall windows. If it doesn't make it that far, it may be a RAM or m/b error.