Re: Desktop shutdown. will not come back on. Green light...
This sounds like it might be a power supply problem. If you are tech savvy enough you can do this. 1st try unplugging it, let all the lights go out and then plug it back in. Try to turn it on. It might work. If not, unplug the pc and hit the power button to discharge all voltages. Open the side panel and watch where all the cables go. Label if needed. Unplug all cables carefully. The ones on the motherboard have a clasp that holds them. You simply sqweeze the clasp and it should pull free. After all cords are removed, remove the screws from that hold the power supply itself in. These are usually on the back. Pull the power supply out carefully. Take the unit to your local computer store. They should have a tester to test a make sure that it works ok. Replace if necessary. If it is not the power supply you might try only plugging in the motherboard and HDD. Remove and boards using a static strap between you and a grounded (plain metal) on the case. after that, plug the unit in and see if it powers up. If it doesn't, it could be the motherboard or a video board you needed to keep plugged in.
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First, create a shortcut on your desktop by right-clicking on the desktop, choosing New, and then choosing Shortcut. The Create Shortcut Wizard appears. In the box asking for the location of the shortcut, type shutdown. After you create the shortcut, double-clicking on it will shut down your PC.
But you can do much more with a shutdown shortcut than merely shut down your PC. You can add any combination of several switches to do extra duty, like this:
shutdown -r -t 01 -c "Rebooting your PC"
Double-clicking on that shortcut will reboot your PC after a one-second delay and display the message "Rebooting your PC." The shutdown command includes a variety of switches you can use to customize it. Table 1-3 lists all of them and describes their use.
I use this technique to create two shutdown shortcuts on my desktop—one for turning off my PC, and one for rebooting. Here are the ones I use:
shutdown -s -t 03 -c "Bye Bye m8!"
shutdown -r -t 03 -c "Ill be back m8 ;)!"
What it does
Shuts down the PC.
Logs off the current user.
Indicates the duration of delay, in seconds, before performing the action.
Displays a message in the System Shutdown window. A maximum of 127 characters can be used. The message must be enclosed in quotation marks.
Forces any running applications to shut down.
Reboots the PC.
Press Start(ORB at bottom left for vista/w7) and if you're on windows 7/vista, there should be a list button on the bottom right side of the start menu saying "Shutdown"(windows 7) and "Sleep"(Vista), click the list and click Reboot.
On XP you need to click the Shutdown button and before you click shutdown instead click Reboot(Green button If i recall correctly).
This suggestion is a real long shot but at least it something you can try. It sounds like you've alreadyruled out all the other stuff I was going to suggest. Try replacing the CMOS battery on the mother board. It's one of those large flat batteries about the size of a nickel.
Hi. This is a hardware problem. If the machine seems to startup normally (apart from the monitor), then it is commonly caused by the video card coming loose. Turn it on, wait about 2 minutes until the drive activity dies down, then press the power button on the computer once. If the machine shuts down and turns off, then it had booted into windows normally and your data should all still be there. If you have a video card in the machine, unplug it, then re-seat it firmly and try again. If the machine is not booting (it doesn't shut down and turn off with a press of power), then unplug the RAM and the video card and press them back in firmly.
The amber light is the error light on a Dell. It can mean a few things. 1. RAM has went bad, not properly seated. 2. Video card has went bad or come unseated. 3. Power supply is not working properly; or 4. Motherboard has went bad. Hope this helps & please remember to rate my answer.
the only thing i can think of is the power supply got fried that is the most common problem when it comes to the pc not powering on. Now hopefully that is all that it fried and not the motherboard my suggestion is to take to local pc repair shop and have them change your power supply or you could put it in if you familiar with how the machine is wired.