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  1. #1
    New Lounger
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    HP Media center XP, Getting blue screen error-logon system process 0xc0000135. I have run the UBCD disk on machine, no errors or malware, Ran chkdsk /r , Did not fix problem. Tryed booting in all the modes, still get error message. What is the LOGON SYSTEM, what am i trying to fix, and How do i go about fixing it.

  2. #2
    Super Moderator CLiNT's Avatar
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    Try the the System File Checker (SFC), follow the instructions in the lnik:
    How to Use SFC.EXE to Repair System Files

    You should also check through your event viewer and post more information about the bluescreen if able.
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  3. #3
    Super Moderator Deadeye81's Avatar
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    Check out Nirsoft's BlueScreenView. You can run it and open your C:\Windows\Memory.dmp file that the BSOD generates. It may point out the file or files that generated the BSOD. Instructions are on the BlueScreenView page.
    Deadeye81

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  4. #4
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    QUESTION IS: What is the LOGON SYSTEM PROCESS. TRYED RUNNING SFC.EXE /SCANNOW, got bad command I am able to logon to c:windows, but have only few command to give it. CAN NOT BOOT WINDOWS, so the start/run options are no good

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    Super Moderator Deadeye81's Avatar
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    Hi Bob,

    If you have an XP installation CD, make sure you set the boot priority in your BIOS to first look at your CD/DVD drive, place your Windows CD in the drive and boot up. Windows will begin to load files and so forth. At the Welcome to Setup screen press 'R' to start the Recovery Console. You will be asked to press the number of the Windows installation you want to access. If you have one Windows installation on your hard disk, press the number of the Windows install that is listed for you. You will then be prompted for an Administrator password. If you use XP Home, the password defaults to blank, so just press enter. If you use XP Pro just use the password you enter at Windows startup. If you don't use a password, then just press enter. Since you are not able to boot into Windows from your hard drive, when you get in the Recovery Console, type in at the prompt "fixboot" without the quote marks (this will rewrite the boot record), and press enter. Then type in "fixmbr" without the quote marks, and press enter. This will repair the Master Boot Record.

    You may be able to run the System File Checker from the Recovery Console. Try it by typing 'sfc /scannow' without the quotes, and note the space between 'sfc' and the '/' mark. If your XP installation is now SP3 and your XP install CD is SP2, this will not likely repair any system files that need replacing.

    Maybe these will enable you to boot from your hard disk.
    Deadeye81

    "We make a living by what we get, we make a life by what we give." Sir Winston Churchill

  6. #6
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    Ran fixboot,and fixmbr, resulted in still getting same error message. tryed to run sfc,but at c:windows promp got bad command,no file found. Tried Safe mode, no luck. Ran disk doctor also.

  7. #7
    Super Moderator Deadeye81's Avatar
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    Bob, you may need to do a Repair install of XP. This will leave your apps and user files intact. Be sure to back everything up before beginning just to be safe.

    Here are instructions for doing a Repair install of XP. Also check this MS Knowledge Base article.

    If you currently have SP3 on your hard drive, then you will need to use an XP install CD that is up to date with SP3. If your XP CD is SP2, then you can slipstream SP3 with it to create an XP SP3 install CD. Some links to instructions are included in the michaelstevenstech.com link. Here is an excellent guide from Paul Thurrott.
    Deadeye81

    "We make a living by what we get, we make a life by what we give." Sir Winston Churchill

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