My daughter has an HP PC running I don't know which version of Windows Vista . The computer is maybe a couple of years old , so I guess reasonably up to date . While I'm reasonably competent with Macs , I must admit to not knowing much about Windows . Anyway , Gill has had this machine for a couple if years and it has been fine up to now . When I visited at the weekend she asked me to look at it as all her desktop icons have changed to .lnk files . Some are shortcuts to apps which still work and others don't . I tried deleting the desktop shortcuts and creating new ones from the program files - made no difference . Tried right clicking on the icon , going into properties , then change icon . Using her iTunes shortcut as an example , this allowed me to select the correct iTunes icon , but despite clicking apply , I could not save the proper icon . I'm guessing this happened as the result of some software update ? Is there any way in Windows of turning back the clock as with Time Machine on a Mac ? Would I be better just buying her a copy of Windows 7 for her Christmas ? ( assuming the machine will run it - but it is reasonably recent so I imagine will be ok ) . Anyone else seen this problem and have any tips ? I have already advised her to back up all her photographs , music etc onto her extrernal drive ( she has two 1Tb drives which mirror each other and backs up alternately to each of them every so often , so most of her data should at least be safe ) .