[SOLVED] How to re-enable an integrated Graphics Card?

[Aereos]

A bit of a conundrum.
Issue with my PC where games were very slow, I believe a recent windows update started to use the integrated graphics card rather than the dedicated (causing the GPU, I think the integrated one, to spike at 100% while sitting at idle). Read somewhere (cannot show where, lost the tab) to disable the integrated graphics card to force the system to use the dedicated. Now, any monitor connected to shows a black screen. Integrated is turned off but the dedicated is not being used either - I have no visual.
I've tried restarting the CMOS, both by switching and removing the battery and draining the system, but to no avail. Integrated Graphics Card is not switching to default and re-enabling.
Specs

AMD Ryzen 7 7800X3D 8-core processor
AMD Radeon RX 7900 XTX
Motherboard = B650E Aorus Master (Gigabyte Technology co)
I think that should cover what's relevant. Cooling system is corsair dominator, 4.2 clockspeed. 32 ram, memory is all SSD.
I don't know the rest of the specs, inaccessible for hopefully clear reasons.

Any advice can help, research online points that the cmos really should have solved the problem. It hasn't
Displays tried have been a monitor and spare laptop, both are black.

 

[TerryLaze]

and spare laptop, both are black.

Any display port on a laptop is an output not an input.
Try the monitor on every connector of your mobo and gpu, both during booting but also when the system is booted up, missing display will not stop windows from booting.

Also try removing the battery for longer.

 

[Aereos]

Any display port on a laptop is an output not an input.
Try the monitor on every connector of your mobo and gpu, both during booting but also when the system is booted up, missing display will not stop windows from booting.

Also try removing the battery for longer.

It is now working. Replugging the HDMI cable back into said monitor now gives me a display. BIOS must have worked, but the connection between the two must have had to be severed. In short, I have no idea why it was necessary.
CMOS battery was removed for an hour yesterday and 30 minutes today. Holding down the power button at random intervals to make sure the PC was completely drained.
"Solved itself" - But I really appreciate your prompt reply!