Hello. I can not cope with changing the system and that's why I am asking for help. I have bought an HP 250G5 Laptop with a wine system installed 10 years ago. I do not like this system very much and I wanted to change it to win 7. As I have never had a problem with it, now I can not move. He does not see the pendrive or the disc in the drive. Probably the problem lies in the bios settings, I am so aware of this on average, the more so because I do not know English. Please help as much as possible. Thank you in advance.