I have recently started work as an IT support person in a charity. We have about 3-4 Dell computors that cant be more then 2-3 years old im not sure what model. when i try to turn any of these on the hard drive starts up and the power supply ect. however it does not seem to be getting past that. There is no boot screen and no evidence of it trying to do anything apart from that. i have checked all the connections ect and i can not find anything that could be the problem. if anybody has heard of this problem and has any idea as to how i might fix it it would be much appreciated.