A black screen appears with cursor only in my pc with win 8 OS. It happens after the installation of realtek hd audio driver but i have restored the pc, but it still appears, i have also tried 'chkdsk' in cmd it repaired the c drive but the condition is still same. The pc starts normally with other user logins but with admin it turns out black with a cursor stating an error "low disk space try closing programs" and it starts good in safe mode. PLEASE HELP!!!