This laptop gives a blue screen while starting

The error seems to revolve around srtspl64.sys

Fortunately, the PC starts fine in safe mode.

A quick search shows that the error is most likely due to norton / symantec security problems.

So I disable all symantec and norton services and automatic startup routines, and then manage to start windows normally.

After that, its easy: uninstall norton, and install Microsoft security essentials