A friend of my had problem with Win95.  He installed Age of Empories,
the first few days everything was okay, until he did a defragment (use
win95 system tool).  After defragment, he couldn't play AOE any more
(anything else was okay, at least looks like).  It seems like something
to do with directX (he also installed directX 5.0 from AOE CD, but not
upgrade video driver < AOE not recommand to upgrade>).  He tried remove
directX and install again, but win95 told him "system error" (he just
can't do it).

After all (uninstall and install AOE many times), he reinstalled win95
and AOE, thing seems back normal. (he asked technical support, they
didn't find anything wrong, and told him his video driver or video card
may not compatiable with directX 5).

His PC:

S3 DX / 4 mb video card
P233 mmx, TX mobo
32 mb sdram
Win95 B (with directX 4 ?)
2.1 hdd
The only game: AOE

Any idea what was the problem?  and what action would he take if it
happen again?

Thanks a lot.