My computer reboots itself for unknown reasons? Help please someone

First, clock speed when computer is on is a function of a
computer timing crystal. A completely different clock
associated with CMOS determines time when powered off. You
did not provide sufficient information to answer this clock
error problem.

First provide basic information. A previously posted
procedure will provide basic facts that are still missing:
alt.comp.hardware.pc-homebuilt on 20 Dec 2004 entitled
"Computer freezes" at
http://tinyurl.com/4tkqz
With numbers, then we go from wild speculating to making
informed decisions as to what to do next.

" wrote:
Award bootblock BIOS v1.0

copyright (C)2000, Award Software, Inc.

BIOS ROM Checksum error

Detecting floppy drive A media...
---------------------------------------------
While using winxp the computer dumps out of XP and goes to a black
screen [like the old dos days] and displays the "above message
appears" and the A:drive light is green and on like it is expecting a
disk in the drive.

PROBLEM: My computer reboots itself for unknown reasons.

here is a list of my comp
WinXP
ASUS A7N8X-UAY 400Mhz FSB
CPU AMD|2500+/333 Athlon XP Barton
Connect 3d|Radeon 9600 128M DVI/TV video card
DDRAM 256MG|DDR400 CL25 PC3200 Kingston X2 = 512 Megs o ram
HD 80GB|WD 7200RPM 8mb cache

Also, my clock runs about 4 minutes fast all the time, I have to re
sychronize it all the time with windows servers.
any help would be appreciated with this problem.

I am sorry for crossposting but I wanted to reach a wider group of
people with knowledge.