There are three approaches you can take to finding the cause of kernel STOP errors:
Set up a remote debug session with the Microsoft Support Network. This process is needed if a memory dump file cannot be generated or if the target computer halts with a STOP screen. The connection process involves configuring your target computer for a connection (modem to modem) to a host computer located at Microsoft.
Set up a local debug session with Microsoft Support Network by using a Remote Access Service (RAS) server. This process is needed if a memory dump file cannot be generated or if the target computer halts with a STOP screen. The connection process involves using a null modem cable to configure both your target computer and your host computer. The host is then networked to a RAS server and the debugging information is sent to Microsoft over an asynchronous connection. You can also analyze the debugging information at your host computer.
Set up your target computer to write the contents of its RAM to a memory dump file when a kernel STOP error occurs. You can then use the dump analysis utilities to analyze the memory dump, or send the memory dump file to technical support personnel for their analysis.