Got a server that is connected to 4 terminals

The server pc (WIN98) keeps restating as soon as the password log in comes up

I think it might have that virus,But there is important information on the HD

Is there a easy way to resolve this with out formatting etc ?

As my friend needs to get the link up between the terms all working again and no work is beng done by the staff:laugh:

Any information would be good

Thanks

put the HD in another machine virus scan it and backup the data.