If you find yourself in need of hardware help for laptops or PCs, check out these computer service repair centers to tend to your tech needs. 

John's PC Service (PC Beijing) offers cheap, fast and efficient service in fluent English. While the proprietor, John, focuses on PCs and Windows, he can put Apple users in touch with the appropriate repair person. To reformat a system costs RMB100 and takes just 24 hours, but John can cut it down to three to four hours if you are in a rush. John does pick-up, delivery and on-site repairs. Costs vary depending on your repair service needs and location.

http://www.cityweekend.com.cn/beijing/articles/blogs-beijing/expat-life/best-computer-repair-beijing/