My XP,Home,SP3,2GB-ram system freezes during the startup logon screen while waking from hibernation. The system goes into hibernation with no obvious problem. I've recently reinstalled the operating system, reinstalled all other software, and installed all MS updates on a refurbished Dell Optiflex GX270. On my previous smaller system with the same software installed, I've used hibernation with no problems for years. On the new system I've tried enabling Low Power Mode in the bios. The system log gives me no clues. I'd sure appreciate some ideas.