Thought I'd do a bit of a defrag on my old Windows 2000 box. A few minutes in, I got a blue screen:
multiple_irp_complete_requests stop: 0x00000044 (0x852CCE68, 0x00000D39, 0x00000000, 0x00000000)
Tried a chkdsk but got the same error, even when running it on boot in console mode.
After some web trawling, found this google answer, which suggested that the problem was caused by 'Intel Application Accelerator' conflicting with recent service packs.
After uninstalling the 'Intel Application Accelerator' my chkdsk finished successfully and defrag seems to be going fine.
Thank goodness for the internet and its wealth of technical solutions!