- “No bootable device – insert boot disk and press any key”
- “No Boot Device Found. Press any key to reboot the machine”
- “Boot Device Not Found. Please install an operating system on your hard disk. Hard Disk (3FO)”
- “No boot device is available”
The most common reasons for 3F0 error to occur is:
- Using the unbootable device or disk to boot from.
- If the bootable hard drive you are using might have corrupted or damaged somehow.
- MBR or boot sector is damaged on the bootable hard drive.
- If your system has gone through a virus or malware attack.
- The wrong boot order in the BIOS.
- Hard disk connection problem.
- System files or boot files unknowingly damaged.
- Corrupt hard drive partitions.
1: Change Boot Order
2: Perform a Hard Reset
Performing hard reset can often solve issues, to perform a hard reset do the following:
- Turn off the computer and unplug the power adapter. If there is a removable battery, it should also be removed.
- Then disconnect all peripherals, including the removable hard drive, etc.
- Press and hold the power button for 15 seconds to drain all remaining power.
- Insert the battery, and then re-plug the AC adapter into the laptop.
- Press the power button to turn on the computer.
- Once the computer starts up properly and the startup menu appears, use the arrow keys to select “Start Windows normally” and then press Enter.
3: Test Hard Drive Using HP Diagnostic Tool
Use the built-in tool in the Hp device to solve the issue:
- Turn on your computer and keep pressing the Esc key until the menu appears on the screen.
- Next, press the F2 key.
- Choose the Components Tests option from the HP PC Hardware Diagnostics menu.
- Select Hard Drive from the Component Tests menu.
- Click on the Quick Test, then click on the Run once button.
- If there are still any issues with your hard drive, then run the Extensive Test.
4: Restore BIOS Default Settings
- Press the Power button to start the computer, and immediately after this, repeatedly press the F10 key to enter the BIOS setup menu.
- To load and restore BIOS Setup Default settings, press F9 on the BIOS setup menu.
- Once loaded, press F10 to Save and Exit.
- Select yes, and then press Enter when it says Exit Saving Changes.
5: Reconnect Your Hard Drive
- Turn the computer off and remove the power cable.
- If you have a removable battery, take it out
- Disconnect your hard drive and then connect it back.
- Reassemble your computer and turn the computer on to see if it fixed the issue.
6: Fix and Rebuild Damaged MBR
- Boot from the original installation DVD (or the recovery USB)
- At the Welcome screen, click Repair your computer.
- Choose Troubleshoot.
- Choose Command Prompt.
- When the Command Prompt loads, type the following commands: bootrec /FixMbr bootrec /FixBoot bootrec /ScanOs bootrec /RebuildBcd.
7: Fix Operating System
- Prepare a Windows installation disc, CD/DVD or USB flash drive and connect it to your PC.
- During the installation process, launch Command Prompt.
- In Windows 7, under the System Recovery Options tab, click Startup Repair.
- In Windows 8 and Windows 10, click Repair your computer, then select Troubleshoot > Advanced options > Automatic Repair (Windows 8) or Startup Repair (Windows 10).

Removing options all together
When Task Manager opens, click on the startup tab on top.
Once you click on startup you will get a list of applications that are set to be started when Windows is booted.
You can now click on the application and then click on disable on the bottom button, the application status will update in task manager to disabled and it will not be booted anymore when Windows starts. In this same manner, you can enable back some applications if you changed your mind about them.
Please note that some applications are using some services and must have them running or they will not work properly. The best practice is to disable applications you are positive you will not use or use rarely so you do not want them to slow down Windows. 

Check for a poorly functioning background process
The final solution. Contact Firefox about these errors on your browser. Oftentimes, these errors occur when you attempt to visit particular websites. Mark the offending websites' URLs and include them in your communications with Firefox.
Sometimes you can also contact the website owner yourself and request them to check their website's code.
Following are additional measures you can take to resolve the Unresponsive Script error.
In the dialog, type in netplwiz and press ENTER.
You will find yourself in the User Accounts window, inside deselect Users must enter a user name and password to use this computer. Press OK
Sign in the window will pop up where you will have to type in your password and confirm it in order to start the feature.
After typing in your password and confirming it, press OK. That's it, next time you wake your computer from hibernation or turn it ON, you will automatically be greeted with a desktop instead of a Windows login screen. 