So I am trying to replace a hard drive in a Lenovo all in one desktop because it's previous drive was failing. The replacement drive is just a standard 3.5in drive: 2 TB Western Digital Green. So I took the old drive out and put the new one in, but I get an error when I try to boot into my Windows 7 Ultimate x64 disk. From the Windows Boot Manager it says the following: File: \Boot\BCD Status: 0x00000e9 Info: An unexpected I/O error has occurred. It also talks about unplugging any external drives but there aren't any connected in this case. What should I do? Thanks.