Flickering Screen

Hi all.
I really need help here. I recently purchased a new motherboard. It
is a NVIDIA nForce 2 (NF2S-ALH) along with a new processor, AMD
Athlon XP2200 with a Thoroughbred cord, 2 ea 128mb DDr333MHR, PC 2700
and of course a cooling fan.
I am running Win XP pro, DVD/CD RW, and the monitor is a SamSung
SyncMaster 174v (Analogu LCD), and an Nividia XFX TNT2 M64 32 meg
video card.
Here's the problem. After installing all the up to date drivers and
the BIOS. I can not boot up to the normal mode. When I do, get to
the desktop, it starts to blink out for several seconds. If I do not
move the mouse the screen will stay corrected. If I boot up into the
safemode, I have no problem.
I have changed the screen resolution to higher and lower freq's with
no change. I have also changed the resolution on the video card,
still no change. The screen keeps flickering. or blanking out.
I am at a lost as to what to try and do now.
If anyone has ideas, please pass it on.. I really could use some help
here.
Thanks,

Dan (Still going in circles)