You can find your device details using the following method:
1) Device manager
As you haven't stated which O/S you are using:
A) Open control panel by simply pasting Control Panel\System and Security\System into the address bar on any window.
B) Click device manager on the left hand side
C) Go to display adapters and clicking display adapter after clicking okay on the UAC prompt should one come up
D) Click on the details tab and in the drop down box click on Hardware IDs.
Copy the first entry in notepad: for instance it may read something like PCI\VEN_1111&DEV_3Q01&SUBSYS_111D2300&REV_05
PCI\VEN_1111 = Vendor ID
DEV_3Q01 = Device ID.
and
2)
pcidatabase.com
Now go to the above website:
Paste the device ID into "Device search" and it should come up.
You can use that information to locate working drivers (copying that and searching display driver should get you working hits) and if you are having any difficulties, let us know.
The alternative is to use a free trial from Aida64.