We answer your question, and it works. Then, 2 days later your dwelling gets burglarized (Creator forbid!). Now, the burglar goes online and asks the same question you did, and lands on your question, and finds it. Now, they have a brand new PC, and you assisted them. get it. We aren't paranoid, we just don't wish to contribute.
If you can gain access to your account, then do the following:
Log in, go to profiles, set your profile as ADMINISTRATOR. Log off, and log back with ADMIN privalages. Now delete yous sisters account. Her stuff will go away! Go into Windows/Users and delete your sisters folder. It is gone!
Now, create another account, and set a password. Set this to Administrator. Set your account as a user. Log off, and log back in using your account. Now if you want to INSTALL something, use the OTHER ACCOUNT you just created with the admin privileges. DO NOT USE AN ACCOUNT WITH ADMIN level unless you are doing something with the PC. Do not browse the internet with ADMIN privileges!
Your relationship with your sister seems to in a sad state. Before you do a factory reset, it would be wise and nice on your part to save your sister's garbage and precious info onto a usb key. Someday, you will be happy that you did.
Now for the 29 step procedure:
1. From the Windows Start menu, click All Programs >Gateway > Gateway Recovery Management
2. In the Gateway Recovery Management window, click Restore, and then Restore system to factory default
3. In the Confirm Restoration dialog box, select Yes, and then click Start
Note: You are prompted to enter your password if a password was set
4. In the Confirm Restoration dialog box, click OK
5. The computer restarts
6. Windows loads files
7. The Please wait a moment screen is displayed
8. In the Restore from factory default dialog box, click Next
9. In the Destination Disk Information dialog box, click Next
10. In the Notice dialog box, click OK
11. The hard drive partition is created
12. The factory default installation is copied to the hard drive
13. In the Finished dialog box, click OK
14. The Please wait a moment screen is displayed and then the computer restarts
15. Windows prepares to start for the first time - this may take a few minutes
16. Windows continues setting up the computer
17. The computer restarts
18. In the Set up Windows screen, click Next
19. In the Please read the license terms screen, select 'I accept the license terms' for each item and then click Next.
20. In the Choose a user name and picture screen, enter the appropriate information and click Next
21. In the Type a computer name and choose a desktop background screen, enter the appropriate information and click Next
22. In the Help protect Windows automatically screen, click Use recommended settings
23. In the Review your time and date settings screen, select the appropriate settings, and then click Next
24. In the Select your computer's current location screen, click the appropriate option
25. In the Thank You screen, click Start
26. Windows checks the computers performance
Depending on your hardware, this process could take up to 15 minutes to complete
27. Windows prepares the desktop
28. The Gateway Recovery Management is installed
29. Installation is complete