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HP Recommended
Hp proBook 4730s
Microsoft Windows 7 (64-bit)

Good afternoon.HP notebook 4730s OS is win 7,two videokarty Intel hd3000 and AMD 7470m,AMD does not work the reason I don't immediately noticed after the installation of the wood reload icon appears Windows and then black screen with a blinking space.the sunset through the safe demolition of the wood all the rules raboaet for Intel.tell me what's the problem?

 Through the task Manager sees the card,can be burned chip?
Or BIOS could be the problem?
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