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Windows 7 black screen with blinking cursor (Pihar.c)


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#1 pequigah

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Posted 23 April 2013 - 07:26 PM

I have a Dell Inspiron with Windows 7 which was infected by what KasperskyTDSSKiller called the Pihar.c rootkit.  I selected the 'cure" option and was prompted to reboot the laptop to complete the removal process.  Upon a reboot, the Dell logo appeared and then the black screen with a blinking cursor.  After researching similiar situations in the Bleeping Computer forums, I created a Windows 7 system repair disc from a clean machine but have been unsuccessful in getting the machine to boot from the CD.  Unfortunately F8 nr F12 don't do anything when pressed.  The initial Dell logo screen suggests that F12 should open the boot options but it doesn't recognize any of the F keys.  The only thing I can do is press Ctrl Alt Del, which restarts my computer.  Any suggestions on how I can get past the black screen would be greatly appreciated.  Thanks.

 

 

 



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#2 pequigah

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Posted 28 April 2013 - 11:44 AM

Can someone please provide some assistance. I've tried booting from a boot disc as well as a recovery cd and can't get it to boot from disc as the F buttons aren't being recognized. Thanks.

#3 Jintan

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Posted 28 April 2013 - 04:28 PM

Hello pequigah,

 

Right off I want to suggest you don't press down and hold keys, such as F12, but tap them until you get a beep each time (the computer telling you "Okay, okay, I heard you the first time").

 

For the disc, did you try F2 at bootup, to access the BIOS and change the boot order to the CD-ROM? Just some comments so we can get started here, and fix your system.

 


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#4 pequigah

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Posted 28 April 2013 - 08:17 PM

Thanks for responding. I've tried tapping both the F12 (boot options) and F2 (setup options) until they beep and neither are being recognized. Those are the only two options provided on the initial startup screen.




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