A moving screen is usually indicative of a hardware issue. It could be related to the display itself, the connection between the display and the motherboard, or even a software glitch causing unexpected behavior. You can do two things for it as restarting phone normally won't work for you. Safe Mode: Restart your phone in safe mode to see if the issue persists. If it doesn't, a third-party app might be causing the problem. Update Software: Ensure your phone's operating system and apps are up-to-date.

I think some reasons can be- Power Supply Issue: A failing power supply can cause erratic behavior, including intermittent power to the display. Mainboard Failure: The mainboard, the TV's "brain," might be malfunctioning. Panel Issue: There's a possibility that the TV's display panel itself is damaged.

Remember to back up your important data before proceeding with any troubleshooting steps. Check Hardware: RAM: Try removing and reseating the RAM sticks. Test each stick individually if you have multiple. Hard Drive: Run diagnostic tests on the hard drive to check for errors. You can use tools provided by the hard drive manufacturer or use third-party diagnostic software. Other Components: If possible, test with different components like the power supply or display to isolate the issue. Re-create Bootable Media: Ensure you're using a reliable method to create bootable media. Use tools like Rufus or the Media Creation Tool provided by Microsoft. Verify the integrity of the ISO files you're using. Access BIOS/UEFI: Check the boot order in the BIOS/UEFI to ensure the bootable media is listed first. Disable any security features like Secure Boot that might interfere with booting from USB. Attempt Windows Recovery: If you can access Windows Recovery Environment (WinRE), try using the Startup Repair or System...

There can be two issues- Display Issues: LCD or Digitizer Problem: A faulty LCD or digitizer could be causing the blank or dim screen. Display Cable Connection: A loose or damaged display cable can lead to intermittent display problems. Motherboard Issues: EMMC Corruption: While less likely, it's possible the eMMC has been damaged during the battery replacement process. Other Component Failures: Other components on the motherboard could be malfunctioning.

It can be a Software-Related Issue: Faulty Apps: A buggy app can sometimes trigger restarts. Operating System Glitches: Software bugs or updates can cause instability. Insufficient Storage: A full storage can lead to performance issues and unexpected restarts. Overheating: Intensive tasks or exposure to high temperatures can cause restarts.

Yes you can replace it with SSDs. They offer significantly improved performance, speed, and durability compared to eMMC. While eMMC is soldered to the motherboard, making it difficult to replace, SSDs typically come in a removable form factor

I think it is not possible to upgrade your processor because the processor may be soldered to the motherboard, due to this reason upgrading the processor may not be possible.