Windows 8 and 8.1 Forums


System not Booting Up - Letter J displayed

  1. #1


    Posts : 7
    Windows 7

    System not Booting Up - Letter J displayed


    Hi! Today I was trying to make a bootable Windows 7 USB using WinToFlash. The application requested the source (location of OS) and target (USB drive) which I furnished after which it proceeded to copy the data onto the USB drive. On completion the system restarted on its own but did not boot up - only the letter 'J' is flashing on the top left of the black screen. Nothing happens beyond this point.


    - I've tried restarting a multiple times but the same result.
    - I've tried booting from the DVD drive by making use of the Windows installtion disks but the setup fails of recognize any Windows installation or even the harddisk.


    Could you please help? Should I try to intalled a driver so Windows setup can recognize the harddisk?


    My configuration is as under-


    HP ProBook 4420s
    Windows 7 (installed from a DVD)


    Thanks!

      My System SpecsSystem Spec

  2. #2


    Posts : 1,851
    8250 x86 + 7 SP1 x86 + Ubuntu 12.04 LTS x86


    Hi,

    Remove the USB stick and DVD disk from the machine.

    Enjoy.
      My System SpecsSystem Spec

  3. #3


    Posts : 7
    Windows 7


    Hi! I've tried the same, but no luck. The flashing letter J is still displayed and the system stops booting.

    I've run the Harddisk and Memory test in the BIOS and both of them pass!

    Thanks, Nitin$
      My System SpecsSystem Spec

  4. #4


    Posts : 1,851
    8250 x86 + 7 SP1 x86 + Ubuntu 12.04 LTS x86


    I'd be inclined to pull the cmos battery out of the motherboard while powered off, for 30 seconds, then replace it and power on.

    Alternatively, there sometimes is a button to push on the motherboard or jumper to set that has the same effect.

    But unfortunately, I am guessing that you messed up the Windows boot loader by using inappropriate commands or incorrect switches.

    You can run a Startup Repair if this is the case.

    Option #6 here can get you started on it:

    Startup Options Menu - Boot to in Windows 8

    then

    Automatic Repair - Run in Windows 8
      My System SpecsSystem Spec

  5. #5


    Posts : 828
    Windows 7 x64 Ultimate/Windows 8.1/Linux


    Quote Originally Posted by nitinpai View Post
    Hi! I've tried the same, but no luck. The flashing letter J is still displayed and the system stops booting.

    I've run the Harddisk and Memory test in the BIOS and both of them pass!

    Thanks, Nitin$
    It sounds like you're not getting as far as the option to enter the BIOS? If that's the case, HP has a way to do a reset, you can try that:

    1. Remove the battery and unplug the power adapter
    2. Press and hold the power button for about 30 seconds
    3. Plug in the power adapter - Don't put the battery back yet
    4. Press the power button

    Hopefully it will start...
      My System SpecsSystem Spec

  6. #6


    Posts : 7
    Windows 7


    @GMan: The laptop is only 2 months old and within the warranty period so I'm a bit apprehensive about opening it up. Also this being a business laptop (ProBook) there are no panels on the underside, infact no vents aswell.

    I did try getting into Startup Repair by booting up from a Windows installation DVD but that errors out as it is unable to find a Windows installation.

    @Calico: I'm able to get into the BIOS setup. The letter J is displayed soon after the prompt to enter the BIOS setup is displayed. However I did try the steps you've listed out but no luck!

    Anything else I can try - please advice.
      My System SpecsSystem Spec

  7. #7


    Posts : 1,851
    8250 x86 + 7 SP1 x86 + Ubuntu 12.04 LTS x86


    Easiest way is to reinstall Windows 7 from the DVD as a custom install. Otherwise, you'd be in for trying to fix the current install from the command prompt involving bcdedit command. Probably can be done, but I can't easily tell you how off the top of my head without the machine in front of me to play with. Calico may have a suggestion or two.

    Win 7 can not easily be ran from a USB stick, as you were trying to do - just so ya know. If it is even possible, it would take hacks and tricks.
      My System SpecsSystem Spec

  8. #8


    Posts : 828
    Windows 7 x64 Ultimate/Windows 8.1/Linux


    Quote Originally Posted by nitinpai View Post
    @GMan: The laptop is only 2 months old and within the warranty period so I'm a bit apprehensive about opening it up. Also this being a business laptop (ProBook) there are no panels on the underside, infact no vents aswell.

    I did try getting into Startup Repair by booting up from a Windows installation DVD but that errors out as it is unable to find a Windows installation.

    @Calico: I'm able to get into the BIOS setup. The letter J is displayed soon after the prompt to enter the BIOS setup is displayed. However I did try the steps you've listed out but no luck!

    Anything else I can try - please advice.
    Out of interest, does the BIOS detect the disk correctly?
      My System SpecsSystem Spec

  9. #9


    Posts : 7
    Windows 7


    @GMan: As you've suggested I got into the custom install option of Win7. The issue there is my entire harddisk is being displayed as a single partition "Disk 0 Partition 1". I had about 5 partitions on it. Does this mean the partition info has got messed up?

    I do not mind losing the data from the Windows installation drive (C but I had a lot of data in the other partitions which I would like to retrieve.

    If I go ahead with the custom install I guess the entire harddisk would get formatted?

    I was trying to fix another netbook by using the USB Win7, but this WinToFlash has messed up my own system!

    @Calico: I'm new to this HP's BIOS and I don't see the details of the harddisk displayed in the system information. Also there is no auto-detect harddisk option. There is a Memory & Harddisk (quick & comprehensive) Test available in the BIOS Setup both of which passed.

    Thanks for your quick response!
      My System SpecsSystem Spec

  10. #10


    Posts : 1,851
    8250 x86 + 7 SP1 x86 + Ubuntu 12.04 LTS x86


    No, custom install makes C:\Windows.old folder with all the old files that were on the partition to begin with.

    Clean install on the other hand, is the type of install that will wipe everything on the partition.

    If x86, I recommend you install from this version with SP1 already part of the .iso: [link removed by admin]

    You will then have to activate it with your own activation code.
      My System SpecsSystem Spec

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