I reformatted my hard drive, installed Win XP successfully, It worked for a while. Then I downloaded and installed MS "crucial" security updates. On restart, it refused to boot, and would crash during boot and start booting over again. I tried to do a repair install of Win XP and now it crashes 2/3 of the way thru setup. I am stuck because I cannot access the recovery console or cmd line prompt. What can I do?