I apologize if my previous response was repetitive. If you have followed the steps I mentioned and are still experiencing display issues with your GT730, here are a few additional troubleshooting steps you can try:
1. Ensure that your power supply unit (PSU) is providing enough power to your GPU. Some GPUs require additional power connectors, so make sure they are properly connected. If your PSU is not providing enough power, it may cause issues with the GPU.
2. Check the temperatures of your GPU during operation. Overheating can cause display problems and crashes. Make sure that your GPU's fans are clean and functioning properly. Consider using software tools to monitor the temperature of your GPU and adjust fan speeds if necessary.
3. If possible, try testing your GT730 in a different computer. This will help determine if the issue is specific to your computer or the GPU itself.
4. If you have access to another GPU, try swapping it with your GT730 to see if the issue persists. This will help determine if the problem lies with the GPU or another component in your system.
5. Consider updating the BIOS of your motherboard. Sometimes, outdated BIOS versions can cause compatibility issues with certain GPUs.
If you have exhausted all these troubleshooting steps and are still unable to resolve the issue, it may be time to consult a professional technician who can diagnose the problem and provide a suitable solution. They will have the expertise and tools necessary to identify any hardware issues that may be causing the problem.
I hope these suggestions help you find a solution to your display problem and allow you to enjoy playing Dota 2 and Roblox without any hassle.