Thanks for the screenshots.
In your first screenshot, the Microsoft Basic Display Adapter is your CPU's integrated graphics. Because it's using a generic driver, the system will definitely feel slow and laggy, especially in games, even if your Nvidia card seems okay.
Let's see if reinstalling the manufacturer's driver gets everything back to normal. We're proceeding cautiously since we don't have a minidump to confirm the exact cause of the initial crash, but restoring this driver is the logical first step.
Access the link below and download and install the latest Intel graphics driver provided by Dell for your laptop.
https://www.dell.com/support/product-details/en-us/product/alienware-m15-r7-gaming-laptop/drivers
Driver name: Intel UHD/Iris Xe Graphics Driver
Version: 32.0.101.7084
(Run the downloaded EXE file and follow the on-screen instructions to install the driver.)
After installing the driver, please restart (not shutdown) your PC so Windows can properly initialize the new driver.
Once back in, go to Device Manager and expand the "Display adapters" category. Check if it now shows the name of your graphics card (like "Intel Iris Xe" or "Intel HD Graphics") or if it still says "Microsoft Basic Display Adapter."
This is an important check because if it remains as "Microsoft...", we might need to manually force Windows to recognize the new driver. Sometimes Windows can be stubborn and stick with the generic version. If that happens, let me know, and I'll guide you through the manual override.
If everything goes as expected and the adapter's name is displayed correctly, you can go back to using your computer normally. Try playing your games to see if they are performing well and if the system remains stable.
If you notice any lag or if any other issues persist, please let me know, and we will look into it further.
Feel free to ask any questions you may have.
Standard Disclaimer: There is a link to a non-Microsoft website. The page appears to be providing accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the site before you decide to download and install it.