Blue Screen and data lost after rescue n recovery during F11 operation

when I start my T61 Laptop, i get complete blue screen with no addition error window. Pl. suggest solution to this problem.
Moderator edit: problem added to subject line for clarity. 
Message Edited by Agotthelf on 21-07-2009 10:40 AM

HI
Thanx for replying . Now the problem of immedietly solved when i booted my laptop with F8 . But the new problem arises. When I logged in, the system starts fine but when I run rescue n recovery option from thinkvantage button , the laptop restarts and then all errors shown. Like "c_1252.nls" file is missing or corrupted. This is the first messege I got while booting. Then I booted with F11 for rescue n recovery. I recovered file c_1252.nls from backup folder on harddrive. But when i restarted again the new c_0437.nls shown missing and this i got so many times after each n every rescue n recovery options. Then I again rescued all the files in system32 folder and restarted my laptop. Which restarts good uptill it asked for domain password . But when i clicked to enter the password the error messege shown " Diskeeper not present" and subsequently "SQL server is disturbed" like that . But the login successful and when the desktop arises the windows intstaller window shows but no further processing even i waited for 15 min. And above all  I lost all my data saved in one n only drive that the LENEVO provided with OS.  NO partiton. PL. suggest any solution this . Is it possible to recover my data since I didnt make any backup ? 

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