Poor QC (quality control). Used to use a lot of their mobos, but back around 2008/09 their sales started slipping, then it got worse, and the QC starting dropping. I only build on Asus, the Rock and GB......but still I get more trouble calls (mobo) on MSI, then I do on any 2 of the brands I build on put together. So I'll fix them and do upgrades for people, but can't take a chance building for a client and have one DOA or something die on it 30-60 days down the road.