Acer Laptop giving me so much trouble, help me out?

Last year I buy an Acer Laptop from the starting days it was doing good work but after nine months the laptop starts giving me trouble. Then I called to Acer Support and they repair it after that wifi connection is not connecting. How can I fix a hardware issue of wifi connection.
Also, tell me that the website which is mentioned below is profitable for me or not?

http://acer-support.uk/