New
#21
Attempt to boot to these USB drives using USB2:
1) Memtest86+ version 5.01
Memtest86+ - Advanced Memory Diagnostic Tool
If you can boot to it then run 8 or more passes to rule in /rule out RAM /DIMM /Motherboard problems.
2) Ubuntu or Linux
Ubuntu tutorials
List of PC brands with their corresponding hot-keys
Let us know your ability to boot to these USB flash drives.