I am having trouble setting up my new hard drives. I have a Dell Dimension 4600 with BIOS version A10. I installed the two new drives and restarted my computer. Now all I get is a message saying Primary Drive 0 not found. I tried to enter setup but it won't let me. If anyone knows how to help me please do. The hard drives I am installing are WD2500 EIDE Drives. Thanks!!!!!