Hp laptop screen won’t display except occasionally

What are the answers to the questions in the prior post?

3) Had you backed up files?
4) Had you made a backup image?
5) If you had to would you be able to make a clean install?
6) What is the status of the drive?
7) Had there been any drive tests?
8) Are all parts original or had hardware been replaced?

The commands in post #8 are when Windows has a normal boot and administrative command prompt or administrative powershell is used.
Currently the computer was not able to boot normally.
When using the Windows 10 iso this is Windows Recovery Environment RE and the commands are different.
In windows recovery when you click on command prompt it will open a black box with title bar: Administrator: X:\windows\system32\cmd.exe
There will be a prompt: X:\sources>

The steps that you made early on were reported but there were no images in the thread. Many times when startup repair is ran there is a prompt about srttrail.txt. Did you see this? If not it will be part of the troubleshooting steps to see if it is an options.
For all these steps please post images of the commands and the results. The steps listed are commands to type and any comments will be in parenthesis.

First see if you can open the Windows advanced recovery on the computer without using the Windows 10 iso.
Power on the computer and as soon as you see the Microsoft windows icon power off.
Power on again and as soon as you see the Microsoft Windows icon power off.
Power on the third time and this time allow the computer to progress to the Windows advanced troubleshooting menu. This typically includes the message "diagnosing your PC"
If it does not progress to the computer's windows advanced troubleshooting menu you will then use the Windows 10 iso.
There are more troubleshooting options with the computer's windows advanced troubleshooting menu if you are able to open it.

Find two flash drives ( > or = 8 GB) that you can format that are in addition to the Windows 10 iso flash drive.

These are the steps for the Windows 10 iso:

1) Insert the Windows 10 iso flash drive into any USB port
2) Power on the computer and click the applicable keyboard key.
List of PC brands with their corresponding hot-keys
If there is no applicable keyboard key or if the step does not work then temporarily modify the BIOS boot order so that you can boot to the external USB hard drive
3) It may take 5 - 10 minutes for the iso to load while viewing the Microsoft Windows icon
4) Select the language, time, currency and keyboard or click next
5) In the left lower corner click repair your computer (do not click install)
6) Click troubleshoot
7) Click system restore (start with the oldest system restore point and keep repeating as necessary to the most recent restore point) ( if system restore fails or if there are no restore points move to the next step)
8) Click startup repair (if it fails it may post a message that it has created a srttrail.txt) (if you see this message make a note in the thread) (if startup repair fails move to the next step)
9) Click on command prompt
(this should open a black box with title bar: Administrator: X:\Windows\system32\cmd.exe and prompt: X:\Sources>)
10) (type all of these commands) (comments will be in parenthesis)
(Take pictures of all of these steps and post images of the commands and results into the thread)
11) bcdedit /enum
12) bcdedit | find "osdevice"
13) C:
14) dir
15) D:
16) dir
17) E:
18) dir
19) X:
20) DISM /image:G:\ /cleanup-image /revertpendingactions (change G to the partition letter displayed in step #12)
21) (reboot and open command prompt > Administrator: X:\Windows\System32\cmd.exe > X:\sources>)
22) chkdsk /r G: (change the letter G to the letter displayed in step #12) (this may take many hours and typically displays ETA)
(reboot as necessary)
23) (reopen command prompt > Administrator: X:\Windows\System32\cmd.exe > X:\sources>)
24) (Insert another flash drive into any USB port so that you can save files to the USB drive and move the files to another computer and then post into the thread)
25) diskpart
26) list disk
27) list volume
28) select disk 0
29) detail disk
30) list partition
31) select partition 1
32) detail partition
33) select partition 2
34) detail partition
35) select partition 3
36) detail partition
37) select partition 4
38) detail partition
39) (if there are more partitions then continue in the same fashion)
40) select disk 1
41) detail disk
42) list partition
43) select disk 2
44) detail disk
45) list partition
46) exit
47) copy c:/windows/system32/logfiles/srt/srttrail.txt Q: replace Q: with drive letter assigned to the blank USB flash Drive)
48) (if there is any problem running this command then type: notepad)
(when notepad opens click file > open > search for srttrail.txt or windows/system32\logfiles/srt/srttrail.txt) (save to the flash drive then move to the working computer and post into the thread)
49) sfc /scannow /offbootdir=c:\ /offwindir=c:\windows (change the letter c to the letter for the partition seen in step #12)
50) bootrec /fixmbr
51) bootrec /fixboot
52) bootrec /scanos
53) bootrec /rebuildbcd
54) (reboot)
55) (more steps to follow depending up the above results)
(please make sure that images of all commands and results are posted into the thread)

Please post images of the commands and results for these steps:

Open command prompt > administrator: X:\windows\system32\cmd.exe > X:\sources>

type these commands:

1) bcdedit /export c:\bcdbackup
2) attrib c:\boot\bcd -h -r -s
3) ren c:\boot\bcd bcd.old
4) bootrec /rebuildbcd

(It should display:
Scanning all disks for Windows installations.
Please wait, since this may take a while...
Successfully scanned Windows installations.
Total identified Windows installations: 1
Add installation to boot list? Yes/No/All:)

5) Y

(then click the enter key
It should display :
The operation completed successfully. (The BCD rebuild is complete.)

6) (reboot and attempt to boot to windows and if it fails move to the next step)

7) bootrec /fixmbr
8) bootrec /fixboot
9) bootrec /rebuildbcd

(If bootrec /fixboot still displays access denied then move to the next step)

(reopen command prompt > administrator: X:\windows\system32\cmd.exe > X:\sources and type:)

7) cd \windows\system32\config

(It should display: C:\windows\system32\config>)

8) dir

(It should display: bbi, bcd-template, components, default, drivers, elam, sam, security, software, system, vsmidk, journal, regback, systemprofile txr, etc.)
(All of the file sizes should be sizeable. If it displays zeros then abort.)
(Make a new directory and name it backup or something similar.)

9) MD backup

( Copy all of the files into this new directory.)

18) copy *.* backup

(It should now display many of these files: bbi, bcd-template, components, default, drivers, elam, sam, security, software, system, vsmidk indicating the files were copied.)
(Change the directory to regback)

19) cd regback

(It should now display: c:\windows\system32\config\regback>)

20) dir

(It should display: default, sam, security, software, system etc)
(All of these files must be sizeable. If it displays zeros then abort.)

21) copy *.* ..

(It should now display:
DEFAULT
Overwrite ..\default? (yes/no/all):)

22) a

(It should now display: sam, security, software, system and that the files were copied.)

23) exit

24) (click turn off your PC)
(Remove the USB flash drive if you had changed your boot order. Otherwise you can leave it and power on your computer.)


There are additional steps if the above does not fix the boot failure.
Please make sure that images are posted for each command and the results for each command.