I own an HP pavilion dv6-6180, it has an AMD Radeon HD 6770M and lately it has been giving me quite the headaches.
I would often turn it on and find its resolution set to 800x600, due to not being able to identify the main videocard (due to have an i3 cpu, it has a secondary, weaker card)
Now, normally a reboot would fix it, but after awhile I got BSODed while playing a mere LoL game.
After sending it to RMA and no issue found, after some troubleshooting done by myself I got to the following conclusions:
-If I turn my laptop on without battery and (obviously) plugged in, it won't recognize the AMD card (and now not even a reboot fixes it);
-If I turn my laptop on with the battery and plugged in, it won't recognize the AMD card aswell
-If I turn my laptop on with the battery and unplugged, it recognizes the AMD card and seems to work fine.
I tried plugging in the cord after already on, it continued to recognize the AMD card, but I didn't have the chance to stress test it with any application (LoL works for me as a stress app)
Now, I find all of this odd, and would appreciate any input on the matter.
Thanks for the input so far;
-Yes, the laptop has a "switch graphics card " option that is not even showing in either of the 2 top cases;
-In those cases, BIOS says I have no AMD card, and drivers complain that they are there for no reason