HP Laptop 14-cf0018ca screen blank when trying to turn on. battery light continuous flashing.

[ammy002]

I am unable to boot up my laptop. When it is turned on the screen remains black the power light is on and the batter light is blinking. 
the windows boot manager appears stating that Windows failed to start. A recent hardware or software change might be the cause and prompts to repair the computer using the windows disk. 
I have run a BIOS check and no error codes appear. the same goes for System Diagnostic Fast and Extensive Tests. 
I have downloaded the Windows System Recovery onto a USB and inserted it to the computer, following prompts to access the Recovery Manager Screen. It then only allows to access the Run Computer Checkup and Show contact Info options, whereas System Recovery and File Backup are shown but inaccessible.
I am hoping to see if there is any way to recovery files and restore the system to access the computer again.

[sandytechy20]

@ammy002 

Welcome to the HP support community.

I understand that you are getting no boot issues on your notebook, I am glad to assist you.

• If you recently installed an additional hard drive, turn off the computer and remove the drive before using the following steps: (Click here for details) 
• Open HP System Recovery: 
• CAUTION: 
• Please backup your data before proceeding further: 
• Press the F11 key repeatedly while the computer is starting. 
• If you have a recovery disc, turn on the PC and insert the first recovery disc into the drive. Use the disc to enter the system recovery. 
• Select Microsoft Startup Repair tool and wait for the repair to find and fix errors. When finished, restart the computer; even if the startup repair tool finds errors but cannot fix them. 
• If the error message persists, open the recovery manager screen as was done in step 1. 
• At the recovery manager screen, press ALT + D. 
• Enter the following text at the command prompt: bootrec /rebuildbcd 
• If bootrec displays "Add installation to boot list?", press y. 
• After bootrec completes successfully, the computer displays "The operation completed successfully". 
• To close the command prompt, enter the following text: exit 
• At the Recovery Manager screen, select Microsoft Startup Repair tool (again) and wait for startup repair to find and fix errors. When finished, restart the computer. 
• The error should no longer open. If it does, perform a system recovery, making sure to backup important files. 
• If you removed a hard drive before using these steps, replace the drive. If the error occurs again, make sure the additional hard drive is not set as an active drive. Only the main bootable drive should be set as active. 

Keep me posted.

If this helps, please mark the public post as an accepted solution so that it benefits several others.

Cheers.