i can n't boot from harddisk and the booting stops with black screen without any message ,sometimes it enters into an infinite loop(restart and stop with black screen ) and sometimes stops in black screen for long time .
i used chkdsk for diagnosing this situation ,and it gave me a message with blue screen("20121112_232111_.jpg") :
Missing export: "memset" !
Missing expott: "NtSerializeBoot" !
Exception: 0E Error code : 0004
CauseWay error 09 : Unrecoverable excption . Program terminated
Note: I have tried to repair system and nothing happened .
and I can access the hraddisk from Cmd.
Please help me what should I do?