Stephanie
Hello there,
Could you please send us a picture of SN code(two lines) at the bottom of machine ?
Here is the system file of SER5 5825: https://url.bee-link.cn/P3BU
Here is the tutorial: https://url.bee-link.cn/s88O
Based on the information you provided, it seems that the boot disk for reinstalling the system was not properly created.
We suggest that you try reinstalling the system using our system files again.
Have a nice day~