hey fend I have encountered s problem when I boot my desktop only cursor is seen rest screen is blank its in safe mode too so what should I do ?
Try to open the task manager , by pressing Ctrl+Shift+Esc key altogether. Open , New task and enter "explorer.exe" in RUn.
maybe the Explorer is not starting automatically.
There could be many other reasons too. But , you need to post some more details.
Try repairing/restoring windows.
As per my knowledge, you need your windows reformatted as It may have gone corrupt or some the windows file have been deleted.
Repairing is a good option.
forget to mention - before doing any repair/reinstall just check your pc with some latest antivirus CD just to be sure that some kind of virus is not causing this.