Win XP halted, Researching problem

Today morning as usual I logged into my quadruple boot PC in Win XP.
(Oh to be open source truly. When will I log on to linux by default instead of Win XP for my daily activities???).
My son wanted to hear his songs (a daily ritual) for which I always go to Win XP and start winamp and play those randomly. He has 16 film songs in his own playlist mede by me. Well ran the same for an hour or so and shut it down.
When I was free for some time I again connected to the net thru Win XP browsed my usual sites
(e-mail,trading some porn) etc and then thought of tring out PC-BSD CD which came with the monthly Linux magazine. PC-BSD is still in beta stage. I just wanted to boot from the CD and see how it looked like and quit when asked for installation.
I found that PC-BSD was not perfect and the mouse seem to disappear. Clicking cancel on some dialog boxes did not have the desired effect and the dialog box remained on the screen.
So I quit and wanted to check my bank account online which I had forgotten before.
I rebooted and lo and behold after the initial Windows logo the blue screen with a message came up on the screen.
STOP:c000021a {Fatal system error} The session manager initialization system process terminated unexpectedly with a status of 0xc0000003a

Now I can boot into all other Linux distros but not in to XP. Yeh!!!!!!!!!!!!!
Google my friend listed some 689 results for this error but really no solution to the problem.
Everyone explains a different solution based on the error codes. So I am left to research on my own and to find a solution.
Even a boot into the safe mode gave a different STOP error IRQL_NOT_LESS_OR_EQUAL

Researching..............