Hi - I am having a problem upgrading from Windows XP Pro SP3 to Windows 7 Professional. I purchased Win 7, and received the box and installation discs from the manufacturer. I used the Windows Easy Transfer tool to make a .MIG file that backs up all of my information, and then attempted to do a clean install. The install would go Okay until I would get an error message 0x8007045D, and the installation would stop. Searching by that error message I have found that this error message usually refers to bad media and they tell you to reburn the .iso at a slower speed. My installation disc is from Microsoft though, and I did not burn it. I thought it might be a HD issue, so I swapped in a 1 TB HD that I had been using for data, and tried to do a clean install there. This time, I would get to the installation screen, and I would get an error that no device drivers could be found. The Mobo is an Gigabyte GA-EP45-UD3P. I downloaded the Win 7 driver for that Mobo, put it on a flash drive, and tried to browse for it, but I then get the error message that no compatible device drivers could be found. My question is this. Do I have a defective installation disc, or am I doing something wrong during installation? Anyone have an ideas on how to move forward? Thanks in advance for any assistance.