screen flashes off and on while using Autoroute with GPS

Hello, I have an Asus Notebook Eee PC Shell series PX1101.
When I run Autoroute 2010 with GPS the screen shows the map correctly, but flashes off and on the whole time. Is this something to do with the video card, or just some setting on the notebook?
Can someone help me please?
Thanks

OS Name Microsoft Windows 7 Starter
Version 6.1.7601 Service Pack 1 Build 7601
Other OS Description Not Available
OS Manufacturer Microsoft Corporation
System Name ASUS
System Manufacturer ASUSTeK Computer INC.
System Model 1011PX
System Type X86-based PC
Processor Intel(R) Atom(TM) CPU N570 @ 1.66GHz, 1667 Mhz, 2 Core(s), 4 Logical Processor(s)
BIOS Version/Date American Megatrends Inc. 1301, 06/05/2011
SMBIOS Version 2.6
Windows Directory C:\windows
System Directory C:\windows\system32
Boot Device \Device\HarddiskVolume1
Locale United Kingdom
Hardware Abstraction Layer Version = "6.1.7601.17514"
User Name Asus\Jan
Time Zone GMT Daylight Time
Installed Physical Memory (RAM) 2.00 GB
Total Physical Memory 1.99 GB
Available Physical Memory 1.22 GB
Total Virtual Memory 3.98 GB
Available Virtual Memory 3.05 GB
Page File Space 1.99 GB
Page File C:\pagefile.sys

 

Thanks for the reply. The autoroute used to work fine a while ago, but I have not used it for a few months. Only now has it started flashing, but I don't know of anything that has changed.
Is there anything I can do about the RAM being used by the video?
In fact, is there anything at all I can do?
Thanks

 

The maps themselves come up fine, but it flashes when I start the GPS.
But they both DID work a while ago.

 

I've just checked it again, and it does have 1024 x 768 which it has always been set on. It definitely only flashes when I plug in the USB GPS to enable real time. The basic map (country shape) stays on screen but the details, roads etc. and GPS trail and location flash constantly.