It's best to let Windows install device drivers automatically. But if Windows can't find a driver for your ASUS Eee PC 1015PX, you can look for a driver on the manufacturer's website of ASUS. Driver updates are often available in the support section of such sites.
2. Scan your computer for outdated drivers. Select the ones(here you should choose ASUS Eee PC 1015PX) which need to be updated and click download. Or you can just check SELECT ALL.
3. When the download process is finished, click SETUP to install them. Voila! Your driver for ASUS Eee PC 1015PX has been updated. Sometimes you need to restart your computer to let the changes take effect.