Laptops wireless WiFi not working when said connected.

Hello, my laptop is a HP brand btu I'm not sure which version and it has wireless WiFi which is linked to my home WiFi. After my HD died, I took it to an electronic shop to get fixed which had to tay there over night. A few days later I get it back with new HD and the data was saved. But ever since I got my laptop back, the wifi works fine the first 5 minutes or so but eventually just drops out. I go to check if it randomly disconnected but it says its still connected. I try opening steam but when I try to log it it keeps saying "Steam is having trouble connecting to Steam servers." Why is my internet not working when it says it's still connected?
I also tried testing ny wifi on other devices connected to the same wifi network but it's only my laptop that has been having trouble.