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Computer fails to boot and display is blank

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Hello.  I recently downloaded Malawarebytes on an HP laptop running Windows Vista Home Premium.  After my first scan, I shut down the computer.  When I tried to restart the computer, I was unable to do so.  The computer appeared to hang on boot.  Moreover, the display is blank.  It appears there is no signal to the display, and it simply does nothing when I turn the computer on.  I tried to connect to an external display, but the external display similarly did not detect any input from the computer.


As this problem arose only after I installed and ran Malawarebytes, I suspect the initial scan deleted a critical registry key or other file necessary to activate the display and boot the computer.  Obviously, I cannot see anything on the screen, so I do not know if there is any error code.  


Please help me resolve this issue.  Note I cannot perform any tasks that require a working display.  Thank you.

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Hello and Welcome to Malwarebytes

Sounds like you scanned and it found some infections. Malware removal is a very tricky process. The malware on your computer is what cause this problem. You will have to seek help from one of the experts to get this resolved. Follow my instructions below to get help with this matter, however you will have to be very patient as their is currently a backlog in that section of the forum.

Being that you are probably infected, feel free to follow the instructions below to receive free, one-on-one expert assistance in checking your system and clearing out any infections and correcting any damage done by the malware.

Please see the following pinned topic which has information on how to get help with this: Available Assistance for Possibly Infected Computers

Thank you

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Also, not only is my display not working, the computer fails to boot since the scan.  The solution needs to somehow undo the results of the last scan automatically, since I can't see anything on the display and the computer, as best as I can tell, will not boot up.

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As the computer in question has been crippled by the malware damage, please just go ahead start a new topic in the malware removal section anyway, explaining the situation.

If you wish, please include in your new post there a reference back to this thread:


While you are waiting for help, you might want to rustle up a USB thumb drive and your Windows OS disks that came with the computer.

They might come in handy for the repair process.


Thanks for your patience,


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