Not enough system resources to complete the API how to do?

Users questions: Can not boot into the desktop appears as the title shows. Want to delete junk files are not deleted, I do not want to reinstall. What way? Find! Which master teach me ah. I also want to get into safe mode, it can not backup, right? Do not know how to do, what measures can not lose what computer They can solve the current problem it? Now can not get into safe mode into how to do?
Experts answer: to dismantle the hard drive to another computer above, delete junk files and copy the required files (C drive only need to copy the file); use the tools with PE system disk, boot from the CD into the PE system , Can be backed up with at least one can enter DOS, and GHOST software with CD-ROM, DOS, using GHOST backup system, reinstall the system, with GHOSTEXPRESS read the contents of the backup file
  • This information provided by the users.Thanks!