Windows does not start, and I can not format

Sorry for my English...

to two days ago was my good computer ruing until the HD source and bu because of a RADIUS, thank God the remaining parts were intact! This moing I bought a 230w atx source and an HD 1tb, I do not remember the brand, ta my room without light or I would open the PC and see the brand. My computer after you installed the source and HD worked good, but now the night he hung up and was caught on the "Starting Windows", I tried to format, and after loading the files appeared a black screen with an arrow mouse and large, do not get out of it, what can be? Note: Before buing was quick after I installed the drivers for the "Driver Booster" began the 100% CPU until tued off and not tued over. And it has a red LED that does not erase it for the cabinet.