Dell Optiplex graphics driver failure

[Airlane1979]

I turned on my Dell Optiplex 3020 desktop PC today to find that the screen resolution is very low with 4:3 resolution stretched. Windows 11 settings show only 1024x768 resolution. The menu on the monitor shows a native resolution of 1600x900 but no way to select that. Device Manager shows that the Intel 4600 graphics driver has a fault, with the message: The driver for this device has been blocked from starting because it is known to have problems with Windows. Contact the hardware vendor for a new driver. (Code 48)

After looking on the Dell community forum for assistance, I have:

• uninstalled the graphics driver and restarted
• installed an earlier version of the driver from the Intel site
• used the Custom Resolution Utility to manually change the resolution
• used the Intel Graphics Command Center which does not show any option to change resolution, probably because of that fault
• used the QRes utility to force a resolution change which produced an error message stating 1600x900 is not supported

Does anyone have other suggestions? Eventually I will have to get another PC if I can’t fix this.

[phillpower2]

We are always happy to help when we can but we cannot safely do so if you are already receiving assistance on any other forum, doing so may lead to confusion as to whose and what guidance you are following which can be both dangerous and costly, decide on which forum you wish to continue and as a courtesy let the other/s know that assistance is no longer required.

Thank you for your understanding.

[Airlane1979]

I see. Thank you for your advice.