I am running a system that comprises: Asus A7N8X-X, Athlon XP2500+, 512Mb RAM (two 256s). OS is W2KPro.

This morning I booted up to find the BSOD, with accompanying message: STOP: 0X000000D1 (0X000001F3, 006, 8X00000000, 0X000001F3) DRIVER_IRQL_NOT_LESS_OR_EQUAL

I haved added no new hardware, but the system has been pretty slow in boot up and shutdown.

If anyone has any ideas, I would be most grateful!

Bad hard disk, memory, BIOS and driver problems can cause this error.

Here's a relevant thread:
http://www.techspot.com/vb/search.ph...der=descending

Thanks very much Rick, it could well be the HDD since it is a pretty old one. The rest is brand new, so I would say it is now time to buy a new one. But I shall check it out with the info from the link you gave me first. Thank you for your help! Very much appreciated!

Busted up HD will do it every time...

Well, I have run it through the suggested tests........ and there is nothing wrong with the HDD...... back to the drawing board, I think.

Do you have any memory you can swap out with what's in use right now?

Unfortunately not, looks as though I shall have to get some tho. Well: I was planning on buying some more at some point, so that will have to be sooner rather than later!