When I received this Acer-computer it had Vista Home and I could not remove or add write-only and other permissions. I tried “everything” to get the power back, but not even awaking the hidden, inner administrator account could make my folders and files suitable for writing. I then formated the C: drive and innstalled Windows7 Ultimate. The scary thing is that the problems with me not being the total administrator followed from the old vista install! How and WHY?