Please see on the motherboard
driver's CD whether the
driver support is available for Windows 7.
The motherboard looks to be old and it seems that
driver support is available only up to Windows XP.
I tried to search for motherboard
drivers on internet and I found results only upto Windows XP. I found nothing on Windows 7 driver support for this motherboard.
So it may be possible to install Windows 7 on this motherboard, but you will have difficulty in finding supported
drivers for this operating system.
I suggest you to upgrade your motherboard and CPU to get the full benefit of Windows 7.