HP Pro Book 470 G5

[KerrynW]

Starts with HP logo in circle then goes to black screen.  Takes 10-15 minutes before loading Outlook.

[charli3445]

hey

HP provides diagnostic software for testing hardware components on your computer and confirm hardware failures.

you need to run first test to check for hardware issues

first check your HDD 

https://support.hp.com/us-en/document/ish_2854458-2733239-16

if all hardware tests pass, then it can be corrupted OS, virus, drivers issue, software.  lets check first the hardware and keep us update 

hope it help you 

[KerrynW]

All 9 system tests pass, what can I try now?

[KerrynW]

And no issues found with the operating system diagnostics

[charli3445]

There might be a software issue. There are 3 ways to fix this problem

>>System restore:

1. Shut down your notebook.
2. Boot into system recovery (press f11 repeatedly as soon as you press the power button)
3. Select Troubleshoot.
4. Select advanced options.
5. Select System Restore.
6. Follow on-screen instructions.

>>Startup Repair

1. Shut down your notebook.
2. Boot into system recovery.
3. Select Troubleshoot.
4. Select Startup Repair.
5. Follow on-screen instructions.

>>System Reset.

1. Shut down your notebook.
2. Boot into system recovery.
3. Select Troubleshoot.
4. Select Reset this PC>>Keep personal files. [Note: Some windows 10 editions have refresh option Select Refresh this PC (if available)]
5. Follow on-screen instructions.

>>Reinstall Windows.

1. On another PC visit this page and download windows media creation tool.
2. Select English windows 10 (64).
3. Select create bootable media for another PC.
4. Select Create ISO.
5. Download Rufus and plug in 8GB or large USB flash drive.
6. start Rufus, under "Partitioning scheme and target system type" drop-down menu select "GPT partitioning scheme for UEFI computer"
7. Tick "Create a bootable disk using" option (second last option) >>Select ISO image from drop-down menu>>locate windows 10 iso by clicking on a small square button.
8. Now plug in this USB to your defective notebook.
9. Press f9 repeatedly as soon as you press the power button.
10. select USB drive you just created.
11. On installation directory page simply click on next. (Windows setup will select C drive automatically).
12. Once installation complete you can recover your personal files from C:\windows.old\users\%username%

[KerrynW]

I don't feel confident doing all of this.

The loading time was fine last week, until the updates over the weekend, it was very slow again this morning, HP logo in circle and black screen a long time before asking me to log in.

It still appears to be updating now????