Hi Can anyone tell me what the follwoing means? Its just started happening when my laptop boots up. Microsoft Visual C++ Debug Library Debug Assertion Failed!graphic 617 Program: C:\WINDOWS\system32\ukxv.exe File: dbgdel.cpp Line: 52 Expression: _BLOCK_TYPE_IS_VALID(pHead->nBlockUse) For information on how your program can cause an assertion failure, see the Visual C++ documentation on asserts. (Press Retry to debug the application) Abort Retry Ignore At the moment, I also can't get i e to load a page, though outlook express and windows live messenger are both working. I was hoping to do a search on google regarding the error message. Any help appreciated. Terry