I bought this pc like 1 month ago, it's been running smoothly until yesterday. Yesterday it suddenly just went off so i turned it back on again and it ran until i turned it off again, but today it's been turning off and on like 7 times in the space of like 3-4 hours. The first 6 times it just turned off and on and i came to a black screen with my specs and 2 options, either f1 to run setup or f2 to continue, but the 7th time it turned off it would'nt startup again, it just made some weird noices while flickering on and off. The light on my graphic card was also flickering on and off, please help!