^^
i think its jus tat there has NOT been a smooth install ...coz if it came preinstalled with x64 bit OS, there shud be absolutely NO problem in running a 32bit OS.. jus reinstall ur OS (be it any one--- 32bit or 64bit)..
also, the s.ware (drivers0 for graphics card is different, say for a 32bit OS, the graphics drivers needed are 32bit and so on..
but if u want a DUAL OS Setup (for eg: win xp pro 32bit and Win vista x64) then install 32bit OS first and then install 64bit os..
and plz post ur results....