Unfortunately you will not be able to access recovery files. It can be done if notebook has “factory settings” only. You use “modified” system with two operating systems. If you want to have “factory settings” again you can have it with usage of recovery disc only.
I don’t know how long it takes but maybe you should contact your parents and ask if they can send you recovery disc as soon as possible.
Other way you need to use Microsoft installation disc for clean OS installation. It can be also good solution for few days until you wait for original disc.