PC constantly rebooting and other problems

[Morrigan]

Hello, I have unfortunately been infected with the Braviax virus. I had managed to find and kill the process and deleted the files associated with it and ran a scan using my McAfee antivirus, but as I later found out it reinstalls itself which it did whilst my OH was using the pc.
He sat with this running for about an hour, connected to the net and now I have a pc that won't connnect to the internet, is asking me to reactivate Windows XP but won't do so and when in safe mode after about 2 minutes it displays an error message stating

This system is shutting down. Shutdown initiated by NT Authority/System
C:\Windows\System 32\services.exe terminated unexpectedly with status code -1073741819. The system will now shut down

which it does and then restarts itself. A friend has tried to run combofix on it but as i can't connect to the internet it is impossible to do this. Have tried to restore to a previous point but there are no available points to restore to. Can anyone help???

[bobreaze]

My best advice is try creating an Ultimate boot cd 4 windows at a friends house and using its tools to try and clean the virus. Your other option is backup important documents and reformat your computer and reinstall windows. Option 2 is easier and ultimatley what i would do.