Thecus n2520 or build new

[Enquiries]

I have a Thecus n2520 that has been sitting in a closet, unused for years. Just pulled it out and factory reset everything. The original OS doesn't appear to be loading fully when trying to access different areas of the UI. What does load is super slow, probably due to the intel atom inside. It appears there is no manufacturer support due to age (which is to be expected at ~10 years old) .
Is it better to scrap it and build/buy new or is there an alternate solution that can be loaded on to it?

Thanks in advance