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Black Screen/Blinking Cursor .... no <F8> option...HELP

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#1 grtcrowd


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Posted 19 April 2012 - 12:32 PM

This is a Dell Inspiton N4010 running Windows 7 Home that shutdown while surfing the web. Since, the only thing it will do is show the startup screen, notes options <F2> or <F12> then goes to the black screen with blinking cursor. There is no beep on start, and when <F8> is pressed, it ignores it and goes right to the blinking cursor.

I have been able to get a boot from the CD/DVD so have run Dell Diagnostics from the CD?DVD. According to the results, the computer is operating great...it just won't go anywhere! Any suggestions?

This is a friend's computer and is a little over a year old. The only disks available is the diagnostic disk, otherwise I would try a Windows 7 reinstall. Usually I don't have too many problems figuring things out but this one has me stumped.

Thanks for any suggestions.

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#2 everready


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Posted 19 April 2012 - 01:20 PM

Hello grtcrowd,

See if you can borrow a Windows 7 recovery disc from a friend, and run the start up repair in the System Recovery Options.

Good luck

#3 AustrAlien



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Posted 19 April 2012 - 04:16 PM

... shutdown while surfing the web. Since, the only thing it will do is show the startup screen ... then goes to the black screen with blinking cursor.

Your description indicates a likely infection of the MBR (Master Boot Record).

Please try the following: You will need a USB drive/flashdrive and a new blank writable CD.

:step1: Please do the following on a working computer:
  • Download GETxPUD.exe to the Desktop.
  • Run GETxPUD.exe
    A new folder will appear on the desktop.
  • Open the GETxPUD folder and click on get&burn.bat
  • The program will download xpud_0.9.2.iso, and when finished will open BurnCDCC ready to burn the image.
    Please be patient: This could take awhile - download file size 63MB.
  • Click on Start and follow the prompts to burn the image to a CD.
You will use this CD to boot the ailing computer from.

:step2: Boot the ailing computer with the xPUD CD.
  • (You may have to configure the Boot Menu or BIOS Setup Menu to boot first from the optical/CD/DVD drive.)
    A Welcome to xPUD screen will appear.
  • Click on File.
  • Expand the mnt icon on the left (click on the little arrow beside the icon).
    • sda1, sda2 etc. ...usually correspond to your HDD partitions
    • sdb1, sdc1 is likely to correspond to a USB flashdrive, external USB hard drive etc.
  • Click on the folder that represents your USB drive (sdb1 ?).
  • Click Tool on the top menu, and choose Open Terminal.
  • Type the following at the hash prompt:

    dd if=/dev/sda of=mbr.bin bs=512 count=1

    • Note: Leave a space between the following:
      • dd ... the executable application used to create the backup
      • if=/dev/sda ... the device the backup is created from (the hard drive when only one HDD exists)
      • of=mbr.bin ... the backup file to create - note the lack of a path - it will be created in the directory currently open in the Terminal
      • bs=512 ... the number of bytes in the backup
      • count=1 ... says to backup just 1 sector
        It is extremely important that the if and of statements are correctly entered.
  • Press the <ENTER> key.
    After it has finished a file will be located on your USB drive named mbr.bin.
  • Remove the USB drive from the ailing computer.

:step3: On the working computer:
  • Insert the USB drive, and navigate to the file mbr.bin
  • Zip-up the mbr.bin file:
    • Right-click on the file and choose Send to .. > Compressed (zipped) Folder.
      A zipped folder will appear in the same location as the mbr.bin file.
  • Please attach the zipped file to your next reply.
    This will allow the MasterBootRecord of your drive to be checked to see whether or not it is infected.

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#4 JaydiBlaze


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Posted 21 April 2012 - 12:43 AM

I don't mean to sound like a pain, but while this may be an MBR issue, are we sure which drive is missing the MBR? I have run into this same issue while accidentally leaving an SD card or USB drive in, and the BIOS had those set to boot before the main hard drive. If this is the case, and we over-write the MBR of the computer, we just caused a larger issue.

@grtcrowd: Are all the USB ports clear of any devices?

#5 grtcrowd

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Posted 21 April 2012 - 01:47 AM

This is not my laptop, but belongs to a friend...I'm just trying to help. There is nothing attached to the computer...all USB ports are clear as is the SD card slot. Thanks anyway! Am looking to try the suggestion given above ASAP.

Thanks again everyone! Keep the suggestions coming!

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