I am working on a client's computer with Windows 7 Pro. When the computer is at her house is is extremely slow to boot. It will get to the Starting Windows screen and hang for 10 to 15 minutes before the 4 colors appear. If I take her computer to my shop it boots in a matter of seconds. I thought it might be her USB mouse and/or keyboard but I tried mine at her house with the same slow boot. Is it possible that her surge protector could be the problem or is there something else I should be looking at? The slow boot happens even with nothing connected except the monitor.