Hello, I thank you in advance for reading the problem I have. To begin with, horizontal lines have appeared on the screen for some time now. Other times the screen just flickers, as if the connection stops working for a moment and then works again. I am 99% sure that it is my graphics card, which is why I only tried to enable the processor's graphics from the BIOS, but it returns to its default state, that is, automatically. I don't know if this is because the installed graphics drivers do not appear. Thank you for reading and I apologize if there is any missing information or if this is not well understood.