Press Windows Key, then type in "language" to search.  Click on 'Region&Language setting' with an icon of Capital letter A and a Chinese character. Then you will get a button with '+' to add a language.  

http://h20195.www2.hp.com/v2/redirect.aspx?/products/quickspecs/13529_div/13529_div.HTML 以下是8540w搭配的CPU列表 官方不支持改配CPU，不確定一定可以使用或使用的穩定性 Processors Intel Quad-Core Processors Intel Core i7-840QM Processor (1.86 GHz, 8 MB L3 cache)* ??Up to 3.20 GHz with Intel Turbo Boost Technology Intel Core i7-820QM Processor (1.73 GHz, 8 MB L3 cache)* ??Up to 3.06 GHz with Intel Turbo Boost Technology Intel Core i7-740QM Processor (1.73 GHz, 6 MB L3 cache)* ??Up to 2.93 GHz with Intel Turbo Boost Technology Intel Core i7-720QM Processor (1.60 GHz, 6 MB L3 cache)* ??Up to 2.8 GHz with Intel Turbo Boost Technology Intel Dual-Core Processors Intel Core i7-640M Processor (2.80 GHz, 4 MB L3 cache)* ??Up to 3.46 GHz with Intel Turbo Boost Technology Intel Core i7-620M Processor (2.66 GHz, 4 MB L3 cache)* ??Up to 3.33 GHz with Intel Turbo Boost Technology Intel Core i5-580M Processor (2.66 GHz, 3 MB L3 cache)* ??Up to 3.33 GHz with Intel Turbo Boost Technology Intel Core i5-560M Processor (2.66 GHz, 3 MB L3 cache)* ??Up to 3.20 GHz with Intel Turbo Boost Technology Intel Core i5-540M Processor (2.53 GHz, 3 MB L3 cache)* ??Up to 3.06 GHz with Intel Turbo Boost Technology Intel Core i5-520M Processor (2.4 GHz, 3 MB L3 cache)* ??Up to 2.93 GHz with Intel Turbo Boost Technology