The free edition of memtest86 can be downloaded at link below. Its usually easier for novice users to burn the ISO to a Disc instead of making a bootable USB drive version of it. Once burned to disc its as easy as placing it into your drive and rebooting the computer. On boot it should automatically boot from the disc and start memtest86. If your BIOS is not configured with the DVD drive to boot from before the hard drive, then it would fail to boot from the disc. If this happens on most new computers you can press an F key specific to your model and get to a boot loader selection where it lists DVD Drive, USB Drive, Network Boot, Hard Drive, Removable Disk, etc. I placed a link to that info below the memtest86 link in case you run into troubles trying to get it to boot off the disc. Lastly crystaldiskinfo I also have linked below. I use the portable stand alone portable version of it which they still have available in their archive that i linked below.
Memtest86... The free edition is all you need:
https://www.memtest86.com/If you run into troubles booting from a disc check out this info below which will help in how to get it to boot from the disc if your boot order doesnt have DVD drive listed as boot priority before hard drive:
http://www.boot-disk.com/boot_priority.htmCrystaldiskinfo... The portable edition as linked here (Note there are newer versions with installers, I personally prefer tools that are stand alone vs ones that have registry hooks into Windows etc):
https://crystalmark.info/download/archive/CrystalDiskMark/CrystalDiskMark3_0_4.zip