I just dual booted Windows 7 with Windows XP Service Pack 3 on a dell inspiron 1520. I had Windows XP installed first, then installed Win 7. Everything worked until I got a BSOD. When the laptop boots up, I am given 2 options, Windows 7 and Previous Version of OS (xp). I am able to boot into Win 7 with no problems, but when I try to boot into XP, I get BSOD!