Check and select Windows XP (Service Pack 3) . Check Run this program as an administrator and click Apply . Technical Specifications (Astra 5800) Interface : USB. Driver Type : TWAIN / WIA. Hardware IDs : USB\VID_055F&PID_0408 .

Check "Run this program in compatibility mode for" and select Windows Vista Windows XP (Service Pack 3) Run the installer as an administrator.

No drivers. No reboots. No deprecated driver signing issues.

Method 1: Manual Driver Assignment (Built-in Windows Drivers)

Use Windows 7’s built-in (requires Windows 7 Professional, Ultimate, or Enterprise).

Restart your PC. As it boots, press repeatedly. From the Advanced Boot Options menu, select: "Disable Driver Signature Enforcement"