i7 920 fan issue

So I inherited a HP Elite desktop, 2010 vintage. It has a strange name Truckee aka Pegatron mobo, X58 chipset. It has 8 GB RAM, Core i7-920 (stock, no oc). It was a client's machine that I was given after I migrated it. I stuck a hard drive in and loaded Windows 10 on it. Now here's the issue...