Having problems with your HP Pavilion dv4000 Notebook ?

Hp lap top will not reboot, restart nor retore

\015 My pavillian will not restart nor reboot. an error shows problems when shutting down, now I can't even put it in the safe mode\015

Answers :

If bios starts you can install new copy os.
\015\012you may not be able to restart you may not be able to get into safe mode but if you can get to the point where u have an option then u can reinstall os.
\015\012need more info let me know
No power or computer does not turn on.\015\012Issue:\015\012No power or computer does not turn on.
\015\012Cause:\015\012\015\012No power from the computer can be caused by any of the below possibilities.
\015\012
    \015\012
  1. Connections not connected properly. \015\012
  2. Third-party hardware. \015\012
  3. Bad power cable. \015\012
  4. Incorrect power supply. \015\012
  5. Bad battery. \015\012
  6. Bad power supply, power button, and/or power board or inverter.
\015\012Solution:\015\012Connections not connected properly \015\012\015\012Verify that the power connection is connected properly to the wall and the back of the computer. If the connections appear to be connected properly, attempt to disconnect and reconnection both ends of the cable. \015\012If you have a power strip (surge protector) or switch used to turn everything on at once, temporarily disconnect the computer from that switch and connect that cable directly to the wall. This will help verify that the strip or switch is not bad. \015\012Verify that the outlet works by connecting a different component to that switch.
\015\012Third-party hardware \015\012\015\012If additional hardware has been recently added to the computer it is recommend that you temporarily disconnect that device or devices from the computer to verify they are not preventing your computer from turning on. \015\012Note: If the computer was working fine before you added the new hardware, removing the third-party hardware did not resolve the issue, and the computer is not beeping but is turning on, please see our POST troubleshooting document CH000607.
\015\012Bad Power cable \015\012\015\012Verify that the cable supplying your computer is not bad or damaged by using another power cable. If you have a standard CRT monitor, this cable can be used in place of the computer power cable. \015\012If you have a portable computer or laptop, when the cables are plugged into the laptop you should see a power light or battery charge light. If this light is seen, this is a good indication that the power cable is good.
\015\012Incorrect power supply \015\012\015\012If you are building your own computer or if the computer has never turned on since you purchased it, it is possible you are using a power supply that does not supply enough power and/or the incorrect type of power supply. Verify your power supply meets the requirements of your motherboard and processor.
\015\012Bad battery \015\012\015\012If your computer is a laptop or portable computer that utilizes a battery for mobility it is possible that the battery may be causing your issue. \015\012
    \015\012
  • If your computer powers on when the cable is connected to the portable computer but not when it is disconnected, we recommend you purchase a new battery. \015\012
  • If your computer does not power on when the battery is connected and when the power cable / charger cable is connected, try removing the battery and seeing if the computer can power on with only the power cable connected. If no power is still received, skip to the final section.
\015\012Bad Power Supply, power button, and/or power board or inverter \015\012\015\012If, after following the above sections, your computer still receives no power, it is likely that a hardware component in the computer has failed. It is most likely that the power supply has failed. If you do not plan on replacing the power supply yourself or if you have a portable computer, we recommend having the computer serviced by your computer manufacturer or a local computer repair shop. \015\012If you have a desktop computer and plan on trying to repair the computer yourself, we recommend you replace the components in your computer in the below order. \015\012
    \015\012
  1. First open the computer and verify the power connections. You may also wish to consider disconnecting the main power cable and reconnecting the power cable to make sure it has not become loose. Also verify the power button cable is correctly connected to the Motherboard. \015\012
  2. Replace the power supply with a new power supply. \015\012
  3. Replace the motherboard.
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Repair Help & Product Troubleshooting for HP Pavilion dv4000 Notebook

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