Last month I buy this Dell Inspiron one 2305 desktop pc and within one month I faced lot of bugs on this system. This system contains the AMD Athlon II X4 610e and ATI Radian HD4200 series video card and windows 7 running on it. As per the title mention that the CPU fan makes noise. The other problem in this system is to be the system goes into sleep mode, and after that wakes up automatically. Sometimes this system has to be shows an black screen with no interaction of the mouse or keyboard. I am not able to disable/enable the Ethernet device. This kind of problem happens on the dell system. Please help me to solve such kind of problem and make this desktop pc as error free.