Hardware Doctor
Hardware
Doctor provides 5 LEDs onboard to indicate the CPU/chipset, memory,
PCI peripherals, clockgen and graphics card status. It is a very
useful tool for DIY users to maintain their computer effortlessly.

When the system is powered on, the most important parts of the
system will be tested in sequence:
1.CPU chipset
2.System memory
3.PCI peripherals
4.Clockgen
5.Graphics display card
The first LEDs will blink when the system has totally failed,
i.e CPU is burnt, or the system cannot run a single step. Then
the first LED will be turned on when the CPU and chipset are being
tested. The LEDs will light up one by one to indicate the associated
item being tested. The LEDs will remain on if the tested item
has a problem.
All the five LEDs will be off when the testing is complete and
no error existed.