Hey,I'm having a problem while doing mostly anything on my computer. It happens like this: I'm in middle of something,and suddenly I hear some strange distorted sound. After a few minutes,the screen starts freezing every here and then for a few seconds parallel with the sounds. Then,it soon becomes untolerable,and I have to restart. If I don't,the computer shuts down automatically . This happens every day,sometimes multiple times a day,and is very annoying. My configuration is : Processor: i7 2.6 ghz MB: Asus P6T deluxe Graphics : Ati radeon HD 5750 1 gb RAM RAM: 6 GB DDR3 OS:Windows 7 (x64)Ultimate edition 750W power supply.