I have a 4 year old HP machine which has suddenly gone wrong.
I run win98 from it and the machine no longer boots up. I get the following message 'No operating system found'. I do not have a boot disc but when I tried a diagnostic disc it said that there was no Hard Drive found.
I have checked all connections and cables but no good.
Quick question but can you access the bios to see if it still lists a HDD. If it does then maybe part of it has corrupted so that win98 is unable to load. If it isn't listed then maybe the HDD cannot power up, could be a faulty cable.
You mentioned a diagnostic disc, exactly what did it do? If you can use another windows computer to create a boot disk. It can be done in My Computer by inserting a flopy disk, highlighting the flopy drive and choosing the format option in the file menu. In the format options tic "copy system files"
Also copy the program "scandisk.exe" to the floppy if it isn't there.
If you insert the disk and run the scandisk program from the floppy it should be able to tell you if there are any problems with the drive