The HP EliteBook 830 G6 is a 12.2" laptop aluminum design weighing approximately 3 lb or 1.44 kg (for touch variants). It comes in touch and non-touch variants.
@foodey if it worked before it will not be hardware issue but a software incompatibility with your hardware. Check the HP site and see if they have graphics driver that support Win11. Also, connect an external monitor and see if that works properly.
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