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Welcome to the HP Forums :) I would like to take a moment and thank you for using this forum, it is a great place to find answers. For you to have the best experience on the HP forum, you could also visit our HP Forums Guide for First Time Here? Learn How to Post and More. I see from your post that you're getting Boot device not found error message on your HP Pavilion notebook. Don't worry we'll work together to help you find a solution.
To provide you with an accurate solution, I'll need a few more details:
Have you recently made any software or hardware changes on the PC before the issue started?
Did you try to run an extensive system test or extensive test on the hard drive from F2?
Have you created a set of recovery media soon after purchase of this PC?
In the meantime, let's try these steps here:
Perform a Hard reset on the notebook:
Many startup errors and other problems can be resolved by decreasing the amount of power stored in hardware components. Decreasing stored power is sometimes referred to as a "Hard Reset". Use the following steps to perform a hard reset on a computer:
1. If Windows is open, click Start and then Shutdown.
If Windows is not open and the computer has power, press and hold the power button on the computer until the computer shuts off.
2. With the power off, disconnect the power cord from the back of the computer.
3. With the power off and the power cord disconnected, press the power button on the computer for 5 seconds. The power light indicator on or near the power button might turn on briefly but then go out.
4. Reconnect the power cord and turn on the power.
I would suggest you run an extensive test on the hard drive from F2(Please capture the failure ID for further assistance).
- Start or restart the computer.
- Press F2 repeatedly during start up to enter the HP PC Hardware Diagnostics UEFI utility.
- Select Component Tests, then select Hard Drive, and then select Quick Test.
- Select drive C:.
- Click Run Once.
- Once the test completes, results are displayed on screen.
If the drive fails any of the tests, this would clearly indicate a possible hardware failure with the hard drive, write down the failure ID (24-digit code).
If the test passes, then the next option is to perform a system recovery either using the recovery partition or using the recovery media: Perform F11 recovery, or restore the system using HP recovery media.
- Restart the computer and press F11.
If you can't enter F11 recovery, perform a System recovery using:
HP supplied recovery media
- Select Troubleshoot.
- Select Recovery Manager
- Select System Recovery.
- Select Back up your files first (recommended).
- Select Next and follow the onscreen instructions to complete the recovery.
If you haven't created a set of recovery media, then the only option would be to order a set of recovery media for your PC.
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I hope this helps resolve this issue completely,
Regards,