Is the puter restarting or freezing?

If restarting change this setting in order to get a more complete error message:

rt. click My Computer then click Properties then Advanced then Startup and Recovery Settings then unclick Automatically restart

As to the event errors:

System Error 1003 Error code 1000007f = "UNEXPECTED_KERNEL_MODE_TRAP_M" - The first parameter displayed on the blue screen specifies the trap number. Trap number 0x00000000, or Divide by Zero Error, may indicate memory corruption. Other hardware problems, or software failures can cause this error. See the the link to Bug Check codes for more explanations about various trap numbers.

Most of the problems leading to this event indicate faulty hardware, bugs in device drivers or incompatible hardware.

A troubleshooting approach from a newsgroup post: "Boot from CD to start the Recovery Console, then read setuplog.txt, and setupapi.log, to see what happens when it boots.

DCOM 10005: As per Microsoft: "These error messages are generated because another application, such as Microsoft Transaction Server, has already started the Dcom (the Distributed Component Object Model) Service. These messages do not indicate an actual problem and are benign." The recommended solution is to install the latest Service Pack

Service Control Manager 7000: A general note about this event - potentially any service may cause this to be recorded so there could be 1000s of variants. Missing or corrupted files, insufficient rights, missing registry entries, antivirus software, faulty hardware, software bugs and probably many other reasons may cause a service to fail in the starting process. The Service Control Manager that handles the startup of services simply records the failure.