Cannot boot from any device screen is showing

Have you tried taking the battery out and putting it back in?

If you can't boot you will have to perform a hard reset.

If safe mode doesn't help fix your device, you can perform a hard reset by booting into a special recovery mode. First, ensure your device is fully shut down. Press and hold the correct keys to boot the device into recovery mode. This will vary from device to device. Here are some examples:

• Nexus 7: Volume Up + Volume Down + Power
• Samsung Galaxy S3: Volume Up + Home + Power
• Motorola Droid X: Home + Power
• Devices With Camera Buttons: Volume Up + Camera

http://www.hp.com/ctg/Manual/c01893277.pdf
See chapter 5, Also read the part about setting or disabling the processor sleep mode, Disable it. IF it boots normally
Go to Start. In the search box type "Device Manager" (without the quotes) - and then press Enter; this will open up the Device Manager. Double click on 'Universal Serial Bus controllers.' Now you will see a list of 'USB Root Hub'. Right-click the top one of these and select 'Properties'. Click on the Power Management tab, un-tick where it says 'Allow the computer to turn off this device to save power' and click 'OK'. Now repeat this action on the other 'USB Root Hub' items in the list. when they are all done you can close the Device Manager, and your USB mouse and keyboard will now be able to re-awake your computer

try this one...........

http://www.blurtit.com/q623358.html

It sounds like your screen might be going bad. Normally there is no setting you need to be doing to adjust colors on your screen. There are some settings when you click Start/Control Panel/Display to look at your display settings, but these normally just control the color around the windows. For example the normal or default color for the strip that is at the top of your internet browser is blue but you can change it. I would say that when you boot your machine if the colors are not what they should be normally during the boot process, then your screen is going bad. You might try Opening a Word Document then type words such as Black, Red, Green, Blue, Yellow, etc. on different lines in the document. Then highlight the word and change the font color to match the word. This might let you see if your colors are true colors or if the screen is bad.

first check the power supply to the booting device and also the interface cable then switch on the computer touch the booting device and see the device is working next see if the device is marked in the bios a primary master or slave or secondry mastor or slave if not shown change the power and interface able and try once more still not showing change the booting device

what you want do is disconnect your hard drive then disconnect the power from your motherboard the from the power supply, and press the power button the connect all the power cables back then enter bios screen go to the boot tab and select boot device priority and move your hard drive up.

Your TV is most likely working ok. If you are using a satellite receiver then re-boot it by unplugging for 2 min then try again.

use the F8 button before windows starts. as the laptop show the manufacturer's screen. keep tapping it gently and fast until you get froted with the bootup options screen. Select whichever option reads the word "VGA" in it. Then it will boot into windows. Enter the multiple screen setup (could be hard given that screen could show all icons and windows big) and select proper settings. Restart the PC and ensure the options remain active.

Try this,Start in VGA mode.Once started,update your video drivers

To use a Safe Boot option, follow these steps:

1. Restart your computer and start pressing the F8 key on your keyboard. On a computer that is configured for booting to multiple operating systems, you can press the F8 key when the Boot Menu appears.
2. Select an option when the Windows Advanced Options menu appears, and then press ENTER.
3. When the Boot menu appears again, and the words "Safe Mode" appear in blue at the bottom, select the installation that you want to start, and then press ENTER.

Safe Boot options loadTOCNode(2, 'moreinformation');

• Safe Mode (SAFEBOOT_OPTION=Minimal): This option uses a minimal set of device drivers and services to start Windows.
• Safe Mode with Networking (SAFEBOOT_OPTION=Network): This option uses a minimal set of device drivers and services to start Windows together with the drivers that you must have to load networking.
• Safe Mode with Command Prompt (SAFEBOOT_OPTION=Minimal(AlternateShell)): This option is the same as Safe mode, except that Cmd.exe starts instead of Windows Explorer.
• Enable VGA Mode: This option starts Windows in 640 x 480 mode by using the current video driver (not Vga.sys). This mode is useful if the display is configured for a setting that the monitor cannot display.
  

Please rate this a fixa