My computer has been recently crashing on me ALOT. At first, I thought it might have been the ram or the power supply. Sometimes I get the blue screen and sometimes I don't. However, last week, when my compute crashed, I've noticed that the 3 green LED'S at the top aren't on and at the bottom of the graphics card, a red LED remains on until I restart my computer. As of now, I got my computer booting but only 2 of the LED's are green, the last one is blinking. What does this mean?