Have your Service Tag ready & contact Dell. For a small fee they should send you the discs to restore to factory settings.
When you've gotten your system back like you want it, I urge you to get yourself an external hard drive and a good 3rd party backup program. You can set it up to do everything automagically at the time and frequency of your choice. 1 TB external hard drives are about $70 these days and a really good FREE backup program is the Easeus Todo Backup Free which you can download from
http://www.todo-backup.com/products/home/free-backup-software.htm . That can save you a lot of time and frustration the next time something like this happens. Sooner or later it happens to all computers for one reason or another.
I have a dell Inspiron 15r 5521. My windows crashed beyond the system restore point and i don't have any backup, neither did i create any. My system doesn't boot at all. It just stays in a loop restarting and restarting all the while failing to boot. It just shows the logo for a while where the little circles are swirling, and then restarts. What are my options here? How do i get my system to run again?