caveats such as turning off AV programs, making sure no malware exists, etc., I'd be curious to know if you don't have bad RAM. I'd download and run Memtest86 or similar. As well, if you have two or more RAM modules, interchange them and see if the same message recurs at the same time or still occurs but referencing a different memory location. I've had an OS install fail repeatedly at the same spot and found bad RAM to be the cause even though the machine had been running without apparent problems.
I tried to update to XP Service Pak 3 (KB93629) and received this error message... The instruction at ox5a90ebdf referenced memory at ox84b4448b. The memory could not be read.
This is the 3rd time I tried to update to SP3 and each time it goes about 3/4 of the way through and then I get this error message. I am then unable to do the "fix" by hitting the "cancel button" and can't even shut down my laptop. I have to power off the on/off button and then it reconfigures back to the XP Home Edition.
Thank you for any help you can give me.