That's a low end laptop. Basically, the graphics card is integrated into the mobo. No upgrade possible. That's often the problem with laptops as compared to pc's, upgrades are often limited.
There are three simple things you can do to speed up any Windows computer.
1- Antivirus sweep and clean. There's all sorts of fancy and expensive ones out there but, completely unnecessary. I've been using AVG free version for over a decade on several computers (laptops and pcs) without any issues.
2- As important as antivirus is adware/malware cleaner. Again, many out there but I've used Spybot as long as I've used AVG. And again, always had my computers running smooth.
3- Cut all the background software, that tends to eat a lot of memory which, always equates to loss of performance. In Windows 7 go to start button and search bar type in "msconfig", without the quotes. Select the msconfig file. In the pop up window, to the "startup" tab. In there, take out all the checks (except for your antivirus). These are all the applications that start when Windows starts. COMPLETELY UNNECESSARY. Like I said, only thing you want to start with Windows is your antivirus.
Do an antivirus update and clean, do the same with your adware/malware, and clear all the starting programs (except for you antivirus). So simple and yet, so few people know to do this routinely.
Cheers! Enjoy your faster computer.