So, my screen was black, then after switching on and off the PC several times, clicking <.> and leaving it for 1h and then trying to switch back on if finally started but the menu configuration was weird...I was able to do a back up and restore the system from a previous restored point and it seemed ok. But i am afraid this might happen again and I am unsure what the problem is. Also I noticed in the web that the G1S model has been having these sort of problems quite often, either related to gpu, video screen or motherboard. Any suggestions on what I might do are welcome. I'm not a great expert on solving problems with my pc. thanks so much for the help!