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Problem when use SEED XDS560 emulator to debug C6747 DSP?

Error connecting to the target:
Error 0x00000020/-2172
Error during: Execution,
TRG_ERR_COMM_FAILURE Error Occured at 0x0000000D

Board Name: C6747 XDS560 Emulator
Cpu Name: ICEPICK_C_0
Abort:  Close Code Composer Studio.
Retry:  Try to connect to the target again.
Cancel:  Remain disconnected from the target
Diagnostic: Run diagnostic utility.

When I try to connect the C6747 board(we made ourselves) by SEED XDS560 emulator, the above error shows. Then I power down my board, pull out the USB cable from my computer, close the CCS, my windows XP system crashed(blue screen), showing up "MULTIPLE_IRP_COMPLETE_REQUEST" which I guess is a driver problem.
I have ever connected the board with XDS560 before and they surely worked well. Sometimes it shows that error and my system crashed. But when I uninstall and reinstall the XDS560 driver, everything work properly. This time uninstall and reinstall does not work.

This has troubled me for days. I will very appreciate your help!