I can’t tell if you have a 32 or 64 bit windows.
Through google i found also those drivers: https://de.driverscollection.com/?H=Mobility%20Radeon%20HD%20545v&By=ATI
These do have a newer date. I can’t tell if the download and the drivers from this page do work, but it’s worth a try.
You could also visit the homepage of your notebook manufacturer to get support from there.