In article <bEEtb.401715$6C4.156119@pd7tw1no>,
"M.MacFarlane" <macfarlaneNO@SPAMshaw.ca> writes:
> Hi everyone,
> I'm hoping this is the right group to post this question to.
> I just purchased a 20" Sun GDM 20D10 monitor, along with the female 13W3 to
> male VGA adapter.

Suspect the adaptor. I dont have exactly the same Sun monitor - I have
a 20?20 but it works fine with a PC CMOS and all. I have 2 or 3
adaptors that DIDN't work. I stumbled across deepspacecables.com
on eBay and "wallah" as they say.
In your case it may be different:
http://cgi.ebay.com/ws/eBayISAPI.dll...ategory=36 68
says in part:

NOTE - If you will be using a PC with windows the monitor will not display
in the following modes:
* BIOS setup
* boot-up
* DOS mode / Sea-prompt (DOS screens inside windows will show)
* Windows blue-screen-of-death

This is normal and can't be avoided.. We recommend you keep a
cheap spare monitor (such as an old VGA/SVGA monitor with
an attached HD15 cable) on hand to view these modes when necessary.