Device Manager Showing Exclamation Points

My new XPS 15 is running great and I love it.  First thing I did after receiving it is wipe the disk clean and did a clean install of  Windows 7 Pro.  Wanted to get rid of all the bloat and junk that comes preloaded. 

That said, after installing the OS I installed the drivers, at least the drivers I knew I needed.  Still though, I have yellow exclamation points next to Ethernet Controller and PCI  Simple Communications Controller.
The laptop is running great.  I'm connected on a home network with two desktops and they are all connected.  The laptop sees the printer and works fine.  The connection with the router is strong and fast.  All three USB ports on it are functioning.
So what could be the issue?  I'm leaning towards the "if it ain't broke don't fix it" and leave it be as is.
Any suggestions or ideas?  Thank you.