>1.) the computer restarts intermittently. sometimes a few seconds, sometimes
after a few hours. sometimes when i browse the help and support and
troubleshooting page, it suddenly restarts.
Those are *classic* symptoms of a defective, failing, or otherwise inadequate
>...the other error is id-1003 code in the event viewer....
A Windows error with Event ID 1003 is a kernel crash (the kernel is the core
of the Windows OS). This can be caused by many things, but in this case I
believe it also points to power supply problems:
>3.) i took its hard disk and placed it in the other COMPUTER B (AMD
sempron), the COMPUTER B would not booth or after displaying the windows logo
it reboots back over and over again...
That is to be expected in this case. When you change a motherboard or move a
bootable installation of Windows XP from one system to another, there are two
important issues that can prevent the system from booting. One is having an
incompatible HAL (Hardware Abstraction Layer), the other is having
incompatible ATA/SATA drivers.
Since you moved a bootable drive from a system with a dual-core processor to
one with a single-core processor, and different (incompatible) HALs are used
in those systems, I would expect the system not to boot. If the move were to
be permanent, you could change the HAL manually to the correct one, or
perform an in-place reinstallation of XP, which would automatically install
the correct HAL.
You will find a lot of information about the HAL in my URWindows book:
Upgrading and Repairing Windows (with 2-hour DVD)
For detailed information on the HAL see p. 32, 118, 126-127, 134, and 576-577.
Specifically on p. 126-127 you can see a list of all of the different HALs,
and why/when they are used. Scott.