Windows 10: problem with drivers ig

So, I fully reinstalled my windows 10 and I can't play games as before my pc is potato. I think problem is because I don't have some drivers installed. I tried to understand by myself but it's too hard to me my component drivers are newest versions as I remember before rebooting my windows, I had a lot of drivers installed but I don't know names of them. Can somebody help me and explain how to download drivers and maybe give me installer or idk. Thanks for help.

:)

 

IGES & STEP files

What application?

(IGES and STEP are 3D CAD files. As far as I know, they have no relation to Windows.)

 

ATI Driver install problems

It's all laid out here: How To: Reinstall Video Drivers (Quick Guide)

It could be a problem with the monitors OSD chip.

 

Graphic Card driver problem

Hi,

Thank you for your interest in Windows 10.

Please be informed that Windows 10 drivers are not yet available for your computer model, Dell needs to update them on their website.

As a workaround I suggest you to follow the methods below and check if it helps.

Method 1

I suggest you to try updating the Display Adapter drivers check if it works for you. Follow the steps to update the Display driver:

• Press Windows Key + X key and click Device Manager.
• Expand ‘Display Adapters’.
• Right-click on the Display Adapter listed and click on ‘Update Driver Software’.
• Select the option to automatically search for the updated driver software.
• Restart the computer after its updated and verify.

Method 2: Uninstall and reinstall the Display driver

I suggest you to try uninstalling the Display Adapter driver and then install the driver from check if it works for you. Follow the steps to uninstall the Display driver:

• Press Windows Key + X key and click Device Manager.
• Expand ‘Display Adapters’.
• Right-click on the Display Adapter listed and click on ‘Uninstall’.
• Select the option to Delete driver software.
• Restart the computer after its uninstalled.

Method 3

I suggest you to Uninstall and reinstall the Display driver in Compatibility mode and check if it works for you.
Refer to the steps below:

Follow the steps to uninstall the Display driver:

• Press Windows Key + X key and click Device Manager.
• Expand ‘Display Adapters’.
• Right-click on the Display Adapter listed and click on ‘Uninstall’.
• Select the option to Delete driver software.
• Restart the computer after its uninstalled.

Now download the drivers the manufacturer website and install it in Windows 8.1 compatibility mode. Follow the steps provided below to install the drivers in compatibility mode:

• Right-click on the driver and click on ‘properties’.
• Click on the ‘compatibility’ tab and check the box "Run this program in compatibility mode for
  “and select Windows 8.1 operating system from the drop down.
• Click on ‘Apply’ and click ‘OK’ and run the file to install it.

Reference:

http://www.dell.com/support/home/us/en/19/product-support/product/optiplex-780/drivers

Hope this information is helpful. Please do let us know if you need further assistance, we’ll be glad to assist you.