If its under warranty, let them do it.
Attempting to troubleshoot your own computer can be a real nightmare. After awhile, you feel like trading your screwdriver for a sledge hammer. I know. I've been there. Before trying to troubleshoot, you must keep a few things in mind:
Beta software: Remember that this software is beta because it still has bugs. Some problems may be the result of this.
Jerry-Rigging: If you have built some strange setup on your computer to "make due", this could result in a problem.(i.e., short cables, missing screws)
Viruses: Scan for viruses. Some of them can do some nasty things.
Here is a list of the current troubleshooting articles:
Check this one thing first
by Justin Shin 8/2/2003
A problem/solution type article for some common networking problems.
by David Risley 4/22/2003
by David Risley 3/30/2001
Some basic steps you should take before contacting any tech support.
by David Risley 3/23/2001
A look at some of the common Windows errors and what they mean.