I have a desktop Medion computer with XP home. It is having startup problems even after returning to manufacturers settings. When I first switch it on, it gets as far as the Celeron logo then just hangs, And then it might get as far as the welcome screen before it hangs again. I have to keeping rebooting at least 6 times and then it decides to boot up ok. Its as if it doesn't work cold, but after warming up a bit it seems ok. I did notice that the keyboard lights never came on. I swapped it for a PS2 keyboard from my old computer. This seems to help at times.