I have installed a new hard drive Western Digital, into a compaq deskpro, the model # is 200-PB-55_B,the modelis 3564 part number is 278740-001, Series 3564, I cant get it to install the windows, I get to the point where with cd Rom help,without, and cant get past that part as far as the commands to put in the windows, I have formatted the drives, and used a western digital boot disc, and one one of the hard drives it would start only in safe mode. Can you give me any other suggestions? I know that you cant go inot the Bios, to check the configurations, and I have looked through your entire site trying to find a user diagnosatics disc and cant find it.