gbhall
Posts: 2,419 +77
Not exactly Kathy - remember the purpose of Safe mode is to run Windows without specific windows drivers loaded - in other words, using default basic drivers for video, HDD access and so on. This seems to me to show that your HDD works ok when the correct drivers are active but does not work when default, basic drivers are used - which is at safe mode and in ubcd4win. That could be serious, because as far as I remember, some parts of SP3 upgrade need to run in safe mode, and so do many important malware checks.If it was a driver problem causing the safe mode issue, wouldn't it be showing some other symptoms?
Hence I recommend you look especially at bios and motherboard drivers.
If you are still interested, you could download an absolutely bog-standard OS like bartPE (often comes with freeware partition managers and similar), or FreeDos. If after booting from a CD made in that way, you are told HDD not found, then that is proof enough for me. In fact, it could be worth making an easius CD http://www.partition-tool.com/personal.htm just to learn what it thinks about your HDD.....