xp

[steve]

I have just installed some DDR memeory and when I restart
I get the error "windows\system\drivers\isapnp.sys"
corupted or not available. I put the old memory PC133
back in all works well. If I use a disk to boot up in Dos
the new memory works fine. As I log on, my bios tests the
memory and says all is OK. The information with the
M/board tells me I have the right memory (DDR 512mb 2700)
Any ideas
Steve

 

[David B.]

How exactly did you replace PC133 RAM with DDR? Both types of mem slots on the board I hope. Download and run Memtest.