Unable to Upgrade or Install Windows 10 on Acer Aspire V5-573G

I have Aspire V5-573G, which has all hardware requirements for Windows 10. The problem is when I tried to upgrade from windows 8.1 to 10 after 30%, the installation stops and roll backs to windows 8.1, I tried this 3 times and fed up. It gave me error "The installion failed in the FIRST_BOOT phrase with an error during BEGIN_FIRST_BOOT operation".

So I tried to do a clean install, I have booted to USB key, formatted hard drive, but it gave me error "Windows cannot install required files. Make sure all files required for installation are available, and restart the installation. Error code: 0x800701E3".

I don't like to scare you, but from the symptoms, maybe your hard disk has problems. It can be just bad sectors, but I would test it for errors. If it is still under Warranty, have it replaced, if not you may have to buy a new one. You can test it with a live CD with tools, such as a Linux live CD or Hiren's Boot CD. Hiren's is a collection of troubleshooting tools in a bootable CD-ROM.

Backup your data to another disk and then you can attempt to fix bad sectors by writing zeros to the disk (low level format). If it completes without errors, it will return to the factory unformatted state, so you can attempt to clean-install Windows 10 again. Hiren's disk diagnostic tools can also write zeros. If you use the same tool as your hard disk brand (eg WD or Seagate) it can also fix minor errors without affecting data.

It is only happening with Windows 10, as Windows 10 installation failed I reinstalled Windows 8.1 and the installation went smoothly. Now I'm currently running Windows 8.1. My doubt is if hard disk is faulty, it wouldn't allow me to install windows 8.1 as well right?

Yes, right! So to USB installation media has the problem. Try wiping it and creating the installer again. Try connecting it to a different USB slot (prefer USB 2.0 for maximum compatibility, avoid USB 3.0 blue slots).

My Laptop has 3 USB ports I tries 2 of them before, Now after your reply tried the third one. Same error bro......
Already I have used 2 different USB's too. Still no luck.
When I'm installing Windows 8.1 there is no error at all, So is there any compatibility issue with windows 10???

Additional Info: My bios is InsydeH2O and SATA mode is set o ACHI, Boot mode set to legacy as UEFI didn't work

I would try installing Windows 10 in another computer to find out if the USB Flash drive works OK. If it has problems in the other computer as well, then something is wrong with the USB Flash drive. First step to fix it would be to delete it and create it again. If that doesn't work, it could be a hardware problem with the drive.

On a second thought, why bother with the USB Flash drive? I would burn the ISO on a DVD disk and install Windows 10 from there.