Screen has lines through it after start up then grey sign states start up

I press the power button,the screen comes on with the apple logo and the scroll starts the screen the has many lines the grey sign comes on and says to start computer again and then the same thing happens

Hi mate,
that whole story sounds really weirdo since after reading all this and knowing that youve tried almost everything doesnt makes it better.. :/
Usually I would say: update your BIOS, but you already updated everything. This problem could be BIOS related since the initialization of the hardware after a standby is controlled by the chipset trough the BIOS.
I guess it could also be something with the background light of the LCD screen (failed initialization after waking up), you can check this by reproducing the situation with the black screen and holding some light near the screen. If you can see some schemes on the screen (something like desktop, etc..) then it could be the background lighting. In such case try to reinstall the operating system and update all installed drivers to the newest version (yes I know, sounds like more pain).
Otherwise, click [HERE|http://eu.computers.toshiba-europe.com/cgi-bin/ToshibaCSG/generic_content.jsp?service=EU&ID=ASP_SUPPORT], find the nearest authorized service partner in your country, contact them and ask them for a hardwarecheckup. Maybe its really a hardware related issue..
Greets and good luck

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I am a Volunteer here, not employed by HP.
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Screen has lines through it after start up then grey sign states start up

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