When I check the link you provided, then click on the 'Browse all drivers for Vostro 2520' link, an nVidia graphics driver show up. Here's that page: So, are you sure it's an Intel graphics device? Which processor do you have on the computer? Is the processor AMD or Intel?
After you upgrade your computer to Windows 10, if your Dell Laptop Drivers are not. Follow the directions on the installation program screen. Reboot your computer. Embedded Box PC 3000 Windows 10 Driver Pack. Latitude E7470 Windows 10 Driver Pack. Dell ControlVault2 Driver and Firmware. Embedded Box PC 3000 Windows 10 Driver Pack. Latitude E7470 Windows 10 Driver Pack. Dell ControlVault2 Driver and Firmware.
The reason I ask is because I've got a couple of HP computers which have older second generation Intel Processors for which Intel and HP have decided to NOT create Windows 10 display drivers. Broadcom Bcm43142 Driver Windows 10 Hp Laserjet P1005 Driver Windows 10 32 Bit. here. Therefore, you either live with the default driver Microsoft gives you after upgrading, or you go back to the previous operating system. Here, although the desktop has plenty of RAM and processing power, I've decided to NOT upgrade those comps to Windows 10. They're not a test machines and I'm simply leaving them as Win7.