First of all, thank you very much for your prompt reply.
I am using
Windows 7 Ultimate - 32 bit OS
Acer Aspire E1-571
Intel Core i3-3120M CPU@2.50GHz
RAM 8 GB
Intel HD Graphics 4000
Driver Version 22.214.171.12465
Driver Date 5/7/2013
DirectX9 (as recommended by most of the MOHAA players)
I tried to run fresh MOHAA without any add-ons or modifications but that didn't work.
Please check the troubleshooting information that is available on the following URL and post the information that is required there.
Also, be sure to be using the latest updates for this game.