My hp G61-631NR window crash after it did a window update. I purchase a external hard drive I trying to back up my files. Before I do the system recovery start over but every time I go to the recovery manager. Click on back up files plug in the hard drive it is doing the file back up. Then it said there is no more space it show the external hard drive. But it won't allow me to click on it and save the files on to it. I don't know why it won't gave the option to save the files on the external hard drive from the beginning.