When I click on "My Computer" to access my backup drive it is not recognized and it will not recognize my USB hard drive either when I plug it in. Disc manager will recognize the USB drive but not the internal backup drive.The BIOS does not recognize it either. I did not have any problems until I tried to hook up an external modem and add fax software. I am running Windows Server 2003 Enterprise. My master drive is ATA and the slave drive in question is a SATA. But like I said , I cannot access the USB drive either even though it is recognized through disc manager. Belarc recognizes the same. I get error messages when I reboot stating that certain drivers were not loaded but I cannot find anything in event viewer that helps. I find a performance library error but that is all. Any help would or ideas would be greatly appreciated. Thanks.