Depends. Usually 10 years or so.

Newest is the L440 fully modded. Oldest is the X32 from 2005. All still working fine.

I'm in the process of fixing many dead laptops at home to be given away for charity.

2007 - 2010, Acer duo core laptop
2011 - present, 1Malaysia netbook
2014 - present, cheapest lenovo i3 4 gen.

to my suprise, i got 1 Malaysia netbook from government, use 4 years for my uni time, still stand strong although it is super lag (honestly i sufer a lot when doing assignment). All my brother & cousin who received 1Malaysia netbook already broken within 6 months received of the netbook ((biasalah, Malaysia product). Until now it have 11 years already.

Lenovo also not bad, every week sure dota 2, still stand strong and i m happy with the performance. no issue at all except the charging cable rosak after 1 year sharp.