:o! Well it would be bettering the system if you did - I suggest consulting with her about it, as downloading the latest drivers is usually important. It might even fix your problem. :D
Edit: Also, what's the name of your GPU? If you got permission from your mum to update, I could try and find the drivers for you. :3
It should look like this:
Also! in the system tab, next to operating system, which version of Windows 7 do you have? 32 bit or 64 bit?