Hallo all, I have a desktop and a laptop both HP machines,both presently running win7-64. I want to install XP on both machines ( yes I know about win7-xp) in particular the laptop i want to use with car routes/maps and the software /hardware is primarily XP (32) based with often no win7 driver support. I have tried using virtual PC ,VMplayer and vrtual box each time I get the same message something like CPQarray.sys is corrupt. This is somewhat similar to a posting back in december 2006 see except mijn is cpqarray.sys (i cant remember if the letters were capitals or not),there is also some comment on th MS support pages relating to the first 1024 cylinders but I don't see the relevance. from trawling the web it looks as though this is a HP problem but as there is no reference on the hp website that doesn't help either. I am only a longtime user of Win and have no programme knowledge,does anyone know how to solve this problem thanks desperate Brian