missing/corrupt files during startup

[Guest]

After installing additional RAM, during startup screen states "missing or
corrupt file fastfat.sys or pci.sys, use XP CD to restore file", I use XP CD
and it errors out saying cannot load ntkrnlmp.exe error code "7".

Any ideas?

 

[Taurarian Constellation]

http://support.microsoft.com/default.aspx?scid=kb;en-us;812580
Error Message: Ntkrnlmp.exe Could Not Be Loaded Error Code 7
or
http://support.microsoft.com/?kbid=330181
Windows XP Problems with Damaged or Incompatible Hardware