I have just done a clean re-install of WinXP SP3 ('slipstreamed' WinXP SP2 Install Disk with SP3) on my Dell Inspiron 1300 & now have intermittent 'No Bootable Devices' message on boot. When I have message & enter setup, Primary Hard Drive = {none}. Only way I've stumbled across to avoid is to reboot using WinXP Install Disk, F3=Quit & this seems to work for a while (note: then Setup shows Primary Hard Drive = my main HD). All I've installed so far additionally are drivers (as per Dell list, except one that failed so found online), Norton Internet Security 2011 & Windows Updates. Note: don't think I ever had this message prior to WinXP install (had PC about 5 years). Any ideas?