I've been trying on and off all week to install Windows 7 on my desktop and it has been a nightmare I have a downloaded copy of Windows 7 that I purchased through their $30 promotion for college students. First, the exe I get through their download manager wont extract the install files on my desktop running XP, it just gives me an "Unknown Error" So I downloaded it onto my laptop, ran it, it created the "ExpandedSetup" folder. I wanted to repartition my hard drive before installing a clean copy of Windows 7, so I created a boot disc from the folder, following all necessary procedures to make the boot disc. But, then it turns out my mother board isn't capable of booting from a DVD. Or at least that's the conclusion I came to after a bit of research and a lot of failed attempts at getting it to work. So, then I was stuck with a useless repartitioned hard drive and no way to boot Windows 7 from the disc. I then tried running the setup file through BartPE off of my external HD, but BartPE isn't capable of running the install file. So then I decided to just reload Windows XP onto my hard drive and just install it from my desktop. Well, when I attempt to do that, it gets to copying windows files, gets to 4% then jumps to 100% and gives me the error message, "Windows cannot copy files required for installation. The files may be corrupt or missing. Make sure all files required for installation are available, and restart the installation. Error code: 0x80070241" So I've tried multiple times to put fresh newly downloaded files on it and still get the same error message. I tried downloading it directly onto my desktop then extracting it but I get the "Unknown Error" message every time I try. I'm not really sure what the problem is, I don't really have any solutions left to try. Any ideas? I'm using (in case it's relevant): Gigabyte i-DNA series motherboard w/ Nvidia nForce 4 SLI Intel Edition Chipset Pentium D 3GHZ dual core processor Edit: I also tried booting from my external HD and it just never boots. I didn't reformat my external HD prior if that would have made it not work.