Windows fails to boot after setting "Switchable Graphics" to "Fixed Mode" on laptop

Solution 1:

HP say

An HP notebook PC with the switchable graphics feature always has two graphics adapter chipsets - a low power, integrated chipset and a high performance, discrete chipset.

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When using graphics-intense applications such as games, the discrete graphics processor enables high performance.

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Fixed Mode graphics require users to change the power state of the PC to enable the higher or lower power processor.

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Using the Fixed Mode drivers on a notebook that supports Dynamic Mode will not work. Using Dynamic Mode drivers on a notebook that supports Fixed Mode switchable graphics will not work.

It sounds to me like

• You were given bad advice.
• You should use the BIOS to change this setting back the way it was (dynamic).
• Maybe you can boot in safe mode (F8).

Solution 2:

Fixed mode will do the trick. I have a HP DV6-6115TX with an i5 processor and AMD 6490M graphics. I experienced the same problem (graphics lag) when I play Call of Duty MW3.

When I changed from dynamic mode to fixed mode perfomance increased a lot. If you are experiencing a problem with Windows not booting, keep the video card in fixed mode and then reset Windows to factory settings.