PI 7.0 Production server restarts automatically

Hi guys,

We have installed and configured correctly a PI 7.0 system on Windows 2003 Standard Edition X64-bit with SQL Server 2005. We are on SP12. Everything, SLD, RFC connections work properly.

The problem is that 4-5 days after the installation the Windows Server restarts automatically in unexpected time during the day (unexpected shutdown), even when anybody doesn't do anything in the system. In the Event Viewer we get the following message/error "System Error: Category 102 EventID 1003". There are no other messages/errors.

This is a production system and we are supposed to go live within the next days! So I need your help ASAP.

Any ideas?

Thank you.

Best Regards.

Evaggelos