Question about HP Pavilion a1520n PC Desktop

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No operating system and when it turns on it says the boot manager is missing

My grandson took the windows 7 operating system off of the hp pavillion a1520n pc desktop. i have tried to reinstall windows 7 and it comes up that the boot manager is missing.

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  • Master
  • 564 Answers

If you have your settings in the bios to boot from your optical drive you should be able to insert your windows 7 disc and choose to boot from it then just follow instructions.

Posted on Oct 29, 2012

  • Sonja Wetzell
    Sonja Wetzell Oct 31, 2012

    The pc does not boot at all, it just has black screen and says boot manager missing. I've tried tapping the different f keys and it does no good. It will not do anything.

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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Mark_Webber
  • 472 Answers

SOURCE: boot problem of hp compaq d530 sff pc desktop

These systems are plagued by 2 faults.
The power supplies die quite often and can become unstable. If it goes into this phase, then the computer will be getting unstable voltage.
The second is much easier to check for.

  1. Remove the top cover of the computer.
  2. Look at the motherboard (fairly closely) at the capacitors (round cylinders sticking up off the board)
  3. If you find any with the tops buldging upwards then you can be assured you have found your problem. The tops should be flat. You may even have some with blackish coloured residue on top.
If you need to, then just gently push any cables aside to allow proper inspection of the board. The main places are near the memory, cpu.

Hope that helps. =)

Posted on Apr 11, 2008

Chuck68
  • 42 Answers

SOURCE: my hp 7965 pc desktop

Some Software Applications May Cause Windows Stop Responding or Restart During Startup or Boot in Windows XP.

If a PC that has been working properly fails to startup or boot, especially after a new application or driver is installed, it is necessary to perform one or more of the following methods to correct the problem. The PC may lockup, freeze, hang, or automatically restart when the Windows Desktop first displays during startup.
Method 1: Disabling automatic restart
This method disables automatic restart if you are unable to view Windows Desktop and/or the notebook continues rebooting automatically (whether by the user or the notebook continues booting without user intervention).
1. During the rebooting process, repeatedly press the F8 key to enter Windows Advance Options Menu.
2. Use the up and down arrow keys to select Disable automatic restart on system failure and then press the Enter key.
3. Use up and down arrow keys to select the operating system to start (if more than one OS is installed).
4. Press the Enter key. Windows should start.

Method 2: Use last known good configuration
Using the last known good configuration may allow the pc to boot to Windows using the most recent settings that worked.
1. During the rebooting process, repeatedly press the F8 key to enter Windows Advance Options Menu.
2. Use the up and down arrow keys to select Last Known Good Configuration (your most recent settings that worked) and then press the Enter key.
3. Use up and down arrow keys to select the operating system to start (if more than one OS is installed).
4.Press the Enter key.

Method 3: Use System Restore to reset Windows to an earlier known safe operating point
This method reverses recent operating system changes to the notebook PC, such as the installation of new software, and takes the computer back to a previous working state. This method may uninstall or remove the software that is causing the problem. Check with the software manufacturer for any known problems and reinstall the software if appropriate.
1. Start Windows in the Safe Mode as follows:
- Remove any disks or CDs, and disconnect any external devices or peripherals.
- Press and hold the Power button for 5 seconds to turn off the computer.
- Press the Power button to turn on the computer.
- Press the F8 key repeatedly when the first screen appears.
- From the Windows Advanced Start-up menu, select Safe Mode and press ENTER .
The computer may run slower in the Safe Mode and the desktop will not look as nice due to reduced colors.
2. Click Start , then click Help and Support .
3. On the Help and Support home page, click System Restore .
4. On the System Restore page, select the Restore my computer to an earlier time option and click Next .
5. Navigate through the calendar looking for a highlighted date and select a restore point date and time that is earlier than when you started experiencing the problem, then click Next .
The computer should shut down and turn back on by itself after the restoration completes. When the Restoration Complete window appears, click OK to continue.

Method 4: Uninstall recently installed applications using Add/Remove Programs
1. Start Windows in the Safe Mode as follows:
- Remove any disks or CDs, and disconnect any external devices or peripherals.
- Press and hold the Power button for 15 seconds to turn off the computer.
- Press the Power button to turn on the computer.
- Press the F8 key repeatedly when the first screen appears.
- From the Windows Start-up menu, select Safe Mode and press ENTER .
The computer may run slower in Safe Mode and the desktop will not look as nice due to reduced colors.
2. On the Windows taskbar click Start , click Control Panel and then click Add or Remove Programs .
3. Navigate through the alphabetical list of all installed programs and select the name of the most recently installed program or programs.
4. Click Remove , click OK when prompted to verify the removal of the program.
5. Restart the computer by selecting Start , Shutdown , and Restart .
- If the computer starts up properly, contact the software manufacturer for updated instructions for a proper installation.
- If the computer does not start up properly, reboot the computer in the Safe Mode and repeat the methods for uninstalling any other recently installed software.

Method 5: Remove applications that load during startup using the System Configuration Utility
If the system fails to start properly after installing a new software application, there may be conflicts with the application if it loads during startup. To resolve the problem, it may be necessary to use the System Configuration Utility to remove the application from Windows startup, or to change the startup sequence.
1. Start Windows in the Safe Mode as follows:
- Remove any disks or CDs, and disconnect any external devices or peripherals.
- Press and hold the Power button for 15 seconds to turn off the computer.
- Press the Power button to turn on the computer.
- Press the F8 key repeatedly when the first screen appears.
- From the Windows Start-up menu, select Safe Mode and click ENTER .
The computer may run slower in Safe Mode and the desktop will not look as nice due to reduced colors.
2. Click Start , click Run , type MSCONFIG , then click OK .
3. On the System Configuration Utility window, on the General tab, select Selective Startup option, and unselect the Load Startup Items .
4. Click OK and then click Restart .
The computer should restart and operate properly even without loading any of the startup items. Most startup items are helpful utilities that run in the background or sit in the system tray until they are needed.
- If the computer does not restart and operate properly, there is a more severe problem and performing the method for reinstalling the Windows OS may be necessary.
- If the computer restarts properly, examine and enable the entries under the startup tab.

Posted on Jan 09, 2009

Chuck68
  • 42 Answers

SOURCE: It will boot up to the windows screen and freezes.

If your computer was able to boot up but unable to load the Windows, the most common cause would be the recently intstalled software or Windows update.

To remove this, follow these steps. Skip Step 1 if it is not relevant.

Step 1: Removing recently added hardware
Use the steps in this section to disconnect any recently added hardware and test for the error.

NOTE: If a new internal device (sound card, hard drive, or other) was added to the computer before the error message started to occur, you have to remove it before continuing.

  1. Turn off the PC and unplug the power cord.
  2. Disconnect the mouse, and any other peripherals attached (Printer, scanner, webcam, zip drive, phone cord, network cable and other devices). Leave only the keyboard and monitor cable attached.
  3. Press and hold the power button on the front of the PC. Release after 10 seconds.
  4. Plug the power cord back in.
  5. Turn on the computer.
  6. The computer displays the We apologize for the inconvenience... message. Allow the timer to count down from 30 to 0.
  7. If the computer successfully starts to the Windows desktop and does not restart to the error message, connect one device and wait until Windows recognizes it.
  8. To find if a device is causing the error, continue connecting the devices, one at a time, restarting the computer each time, until the device that is causing the error is found.
NOTE: If this does not solve the issue try to do a system restore BUT it will delete all your files and programs you install by yourself after the system. You will be able to use the pc as a new pc.

Posted on Jan 25, 2009

  • 1 Answer

SOURCE: I have a s3100n hp slim line pavillion and thru hp tech support was advised to do a system recovery. when i tryed to reboot my system some programs were missing and they hp said that i need the recov

you must go to bios and change boot sequence from harddrive first to cd first. When you start your pc it always go to harddrive and freezes up. when you change boot sequence it will only go to cds first then follow directions.

Posted on Jul 01, 2009

joecoolvette
  • 5660 Answers

SOURCE: Problem with the HP xw9300 Workstation PC Desktop

Computer unplugged from power, Anti-Static Precautions observed, remove the ram memory module/s.

Clean the gold plated contact pins on the bottom of the ram memory modules, with a pencil eraser.
Use air to remove the eraser dust.
(Can of compressed air for computers, or air pressure from your mouth will be sufficient)

Reinstall the ram memory modules, close the computer case, plug the computer into power.
WAIT 1 minute, turn the computer on.

To open the computer, and relative information,

http://h20000.www2.hp.com/bizsupport/TechSupport/DocumentIndex.jsp?contentType=SupportManual&lang=en&cc=us&docIndexId=64180&taskId=101&prodTypeId=12454&prodSeriesId=459226#5

Left-click on Service and maintenance information.
Left-click on the file name -
HP xw9300 Service and Technical Reference Guide.

This is a PDF file download.
It may take up to 30 seconds to see the first page, and additional time for the file to fully download.

1) Page 73: Removal and Replacement Procedures
2) Page 84 through 86: How to open the computer case
3) Page 94: Removal and replacement of ram memory

Posted on Oct 11, 2010

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  1. Remove any CDs, DVDs, or memory cards from the computer.
  2. Disconnect all devices from the computer except the original mouse, monitor, and keyboard. Leave the power cord connected.
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