1. The power supply was puny. Below 400 Watts.
2. The motherboard capacitors were domed and leaking.
Hope niether is true on your machine.
I am experiencing stop errors IRQL-NOT-LESS-OR-EQUAL during startup on WINDOWS 2000 PRO. I have googled to death this stop message.
After having narrowed the problem down to either the CPU or motherboard I have a question.
If I disable the L1 cache on my ASUS P4B533 motherboard latest BIOS (1015), it will proceed with the bootup and startup of WINDOWS 2000. I am presuming that since this resolves the issue it might be the CPU. Has anyone had or experienced a failure of L1 cache before? This is a P4 2.2Ghz 533 socket 478 processor.
Any other thoughts? The system was operating correctly but doing intermittant reboots. I chased the problem finally resorting to a reinstall of W2k at which time the halt started ocurring. I have eliminated all hardware possibilities except mobo and CPU.