Sudden hardware failure - not HDD or memory

Jan 2, 2019
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Hi,
I hope this is the correct forum - if not please just let me know.

Can someone help me with a dead Win 10 PC. I’m sorry the post is so long but I’m not sure what is relevant and what is not.

I used the Win 10 PC all day with no problems then just left it (did not turn it off) until the next morning. When I woke it up it immediately said diagnosing windows then trying to repair windows then failed to repair.

I restarted it a couple of times but it always attempted but failed to repair windows.

I replaced the hybrid HDD (which is only about 30 months old) with a new 500GB SSD and did a clean install of windows from a USB. I created this using “media creation tool” run on my son’s Win 10 PC.

The install appeared to go smoothly and went through at least one restart but then went into the diagnose - repair - fail repair routine.

So a new SSD and completely new install of Windows made no difference - the problem must be elsewhere.

I then used Memtest86+ version 5.01 to check the memory but no problems were found there after 2hrs testing.

I don’t know if it is relevant but I had to disable Fast Boot in the UEFI BIOS to allow booting from the Memtest USB. So I again did a clean install of Windows with Fast Boot disabled. (I deleted all petitions and allowed the Windows install to create whatever it wanted). The result was exactly the same and the install failed at exactly the same point as the first time as far as I can remember - that is after a restart and after entering location, keyboard, login account, setting a PIN, declining Cortana - then a spontaneous restart and then into the diagnose - repair - failed to repair problem.

The PC was built by Chillblast in the UK and is about 30 months old. The spec is i5-6400, Asus B150M-A motherboard, 8GB DDR4 (2x4GB sticks) and GeForce GT 730.

I’ve about reached the limit of my knowledge and would really appreciate any suggestions as where I should go now. Should I just give up and get a new PC?

Apologies once again for the long post.

Thanks in advance, Peter.

 
Memtest86+ has not been updated since year 2013. It is reported to have problems with UEFI BIOS. I recommend using MemTest86.

If PC was built by Chillblast, they may have used a clunker for a power supply. I would check the voltages in the BIOS and try borrowing another power supply. A GT 730 requires at least a 300 watt unit.
 


Thanks Calvin. I'll try MemTest v4.3.7 and look at the voltages and get back to you. The PSU is a CIT Basic 500W. Video is working as both the BIOS screens and the MemTest screens are fine. Peter


Ok. I've run Memtest86 v4.3.7 for about 7hrs - 4 passes with 0 errors so doesn't appear to be memory issue.
The voltages from the BIOS are:
CPU core 0.96v
Memory 1.20v
Rails 12.288v, 5.160v and 3.37v
which I think are all normal. Any other thoughts. Thanks again Peter