Hello! I've had a problem with my computer for a couple of days. It started with my sound buzzing and the screen blacked out for a sec and I got the error message that the drivers for my graphics card had been reset. Then everything worked as it should. But all of a sudden my screens blacked out and it said no signal. This happened every now and then and sometimes it came back and sometimes I had to restart the computer. But upon one of my restarts I got a blue screen after the windows logo had been up for a while. I tried to do the windows repair but it went on and on throughout the whole night and nothing happened then I tried to start Windows in safe mode and it didn't work. Please help. Since nothing is working my guess Is that it's the hardware. But in that case how do I know which part to replace and can I still save some of my files If I have to clean out my computer? Thank you