I'm not sure whether this should be posted here, as I don't even know for sure whether it's a problem with my monitor or my computer itself, but anyway. A few days ago my LCD screen, a BenQ FP71E+, started turning black for around 2-3 seconds each time, occurring around every half an hour. The day after it started getting worse and evey ten minutes the screen would turn black without fail. I must also note that the monitor's light doesn't turn off onto stand-by - it just turns black and no lights on the monitor indicate that anything is happening at all. Then, my computer screen started getting discoloured, and certain shortcut icons on my desktop were getting red lines through them. When I put on Firefox, the top of the page had numerous blue dots on and loads of blue lines too. Even my mouse had a red line that followed it round, as though it had become part of it (the part that makes me think it's not a monitor problem). Earlier on, this happened (the black screen was popping up every few seconds making it impossible to use) and then my computer just froze on me. I need some serious help with this and I hope anybody could give me assistance. Thanks in advance.