Stating up front, I have already done the /int10grfxsafe thing, MODE C80, etc I even installed a VIOP10.WPI that someone referenced somewhere else.
The issue is with DOS windows. I had a issue previously on a different computer and the above did fix that. But this is on a Lenovo Desktop (Blondeguy machine).
This issue is different from the issue i had on the other computer.
Now the DOS window opens, it shows text changing in the first 2 columns of the window and after 20-30 seconds the OS locks up.
Attached is an image of what the top left of the window looks like, characters seem to scroll across the 2 character area, but it doesn't look like it is a continuous stream.
I've been dealing with this issue for awhile. The computer runs my BBS and the only thing I can't do is run BBS doors since most are all DOS. Just wish I could figure it out and maybe play some LORD or USURPER again
Create a testlog of this system and upload it.
What is the make and model of your system. Having more information will be helpfull.
It seems DOS windows is not the issue, but rather the the VDM support is broken.
Starting WIN/OS2 full screen will also hang the system.
Changing the video driver will most likely not help.
If you have the line ACPI.PSD in your conrfig.sys try starting with ACPI.PSD /MAXCPU=1 and try again.
But this rather sounds like VDM code running in into trouble either by the CSM layer in your BIOS or the video card BIOS code screwing up.
Because that is what VSVGA.SYS depends on.
Roderick Klein