you need new pendrive and about 20 minutes operate and (1h 40m computer time)
buy new pendrive around 64 GB of space, sometimes 32GB is enough
find rufus on yahoo ;-), download it (portable version), unzip it (if needed)
make shortcut icon to the desktop
when you have time (and strong laptop battery) run rufus
adjust settings, the drive letter, name of pendrive, NTFS file system and uncheck [_] Fast Format
the pop-up warning windows warns about erasing data (should be empty if new):
you make it ONCE at begining of usage of pandrive
this proces takes around 2h:
now your pendrive is ready to store your important files you need that copy, because all support centers ERASE customer HDD on begining due to ! data protection !