G62 A40EP - Black Screen in Win Logon

Hi,
I have a PC notebook HP G62-a40EP, with win 7 64 bits, when i turn on the laptop, the HP logo apears and when loging in Windows the sceen goes black, it has 2 GPUs, an Intel HD and an AMD HD 5470.
I re-installed windows and the drivers from support page for this notebook, and problem still there, i´m thinking of updating the bios, since i have read somewhere that can resolve the problem.
My Bios Version is F.0B, and in the supprt page there are severall Bios Versions, my question:
May i flash the version F.48 in my notebook?
Thanks in advance
Paulo

Hi @PauloLGonc ,
Thank you for visiting the HP Support Forums and Welcome. I have looked into your issue about your HP G62-a40EP Notebook and needing to know about Flashing the BIOS. There is a difference from flashing the BIOS and updating the BIOS. An update is necessary flashing sort of makes or forces the computer to apply the changes.
I recommend restore the BIOS to factory defaults.
Can you connect the Notebook up to a monitor and see the screen?
This document shows you how if you need it.
Hope this helps.
Thanks.
Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
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I apologize I didn't already provide these answers initially.
Questions:1. Does this happen 100% of the time, or is it intermittent?
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2. Does it happen starting from full shutdown (press and hold SHIFT key while you shutdown the computer normally, then swipe to power on and log in).
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5. Can you export registry at these locations:
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I have a bookmark for iMac w/ SSD and hard drive.
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Message was edited by: Jaygyver

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This question was solved.
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TwoPointOh
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Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
Click the “Kudos, Thumbs Up" on the bottom to say “Thanks” for helping!

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G62 A40EP - Black Screen in Win Logon

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