|"No I am unfamiliar with memtest. Can you explain what it is and how to use it please"|
What?? I told you to test your RAM with memtest86 in your other thread but you said "Tested memory and working perfect". See responses 4 & 5:
Here's a link to the memtest86 download page. Make sure to use the correct version. v3.5 is newer but it's for use with less than 4GB RAM. If you have 4GB or more, use v3.4a.
Everyone's building procedure is a little different, but for future reference, here's my method:
1. benchtest the hardware. During benchtesting, I usually enter the BIOS & configure the settings for best performance. I also monitor the CPU temp. If the CPU temp is too high, it's much easier to remove & reinstall the heatsink while the board is on the bench than it is working inside the case. If that checks out, I usually run memtest86 immediately to confirm the RAM is good. I'm "old school" & always run it from a floppy...in fact I still install floppy drives in all systems I build. Once I'm sure everything is working properly, I move on to step 2.
2. Install the hardware in the case & test again. If it checks out, move one to step 3.
3. Partition & format the HDD, then install the OS.