Is this a new computer? If so, you need to contact Sony..
Why are you having to do a factory restore? They do not normally fail if done correctly, unless there is a problem with the laptop, like a failing hard drive.
Have you tried using the F8 key to get into the Repair options and do a startup repair?
Do you know anyone with a copy of Windows that could burn you a Recovery CD or let you borrow their install DVD?
Do you have another system to either burn a CD or create a bootable flash drive?
Has anything happened that might help explain any problems?