I'm sorry to say this, but the first thing that comes to mind is bad memory.
And yes, memory that was good yesterday can go bad today.  The only way to
truly prove this would be to either rebuild the machine with the current
operating system (I would use a small spare disk for this to avoid
overwriting your current setup), or if you have multiple SIMMs/DIMMs you
could try swapping them around and see if the "unreliable memory address"
changes.

It is possible that your HIMEM.SYS is corrupt.  But, the reason it says
HIMEM.SYS is missing is because it expects to see it located in the TSR
memory and it is not there due to the previous error.  It has nothing to do
with the physical location of HIMEM.SYS on the hard drive.

Hope this helps.

Kyle

From: "Philip Mitchell" <[log in to unmask]>
Sent: Thursday, June 08, 2000 7:10 AM
Subject: [PCBUILD] Boot problem


> hi, my pc is experiencing a boot problem. on boot up, it tries to load
boot record from the floppy, which says not found. Then, it loads boot
record from from IDE-0, which says it is ok. HIMEM tests extended memory,
says done. The windows XMS driver then loads, but an error message then
appears that says ERROR: HIMEM.SYS has detected unreliable memory at address
02E02808 and XMS driver not installed.
> To continue starting your computer press ENTER.
> Once that is done, it says HIMEM.SYS is missing, and to make sure that
file is in my windows directory, Windows has stopped, restart the computer.
>
> I have looked in the windows directory, and HIMEM.SYS is present. I ran a
McAffee rescue disc to search for viruses, and none were found.
>
> Anyone have any ideas? I am stumped.

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