I think Himem was accidentally disabled. I am not sure how/where it was done.I have WIN98 SE on a DELL 233,160,6.6. It boots for a sec or 2 then goes str8 to DOS prompt.I cant even boot to Safe Mode.It does try to boot but I think it only has the 640K of memory to use so it cant boot to Windows.I ran a Full scandisk with no errors of any sort.I know VERY little about DOS so I dont know where to proceed. I have 3 boot disks. 1) Made from the computer itself.2) from startdisk.com and 1 from bootdisk.com. I do not know how to use the bootdisk. I know the solution is going to be simple. I just don't know what that will be,Thanks !