Random crashes and boot failure(s)

My PC has worked well for the last few years and for about 3 weeks I have had seemingly random crashes and restarts, No blue screen at crash just like a power loss, Usually it beeps once on reboot and the motherboard manufacturer logo appears then it crashes and the cycle restarts. This may happen up to 6 or 7 times, although it varies). Eventually it goes to the blue windows screen, sometimes it says "Automatic Repair" then "Diagnosing your PC" and goes on to the user log in screen. The hard drive light is often on for a long time at this stage. If I log in as a user before the drive light stops, it invariably crashes again. If I wait until the drive stops, then I log on, I may be able to use the PC for a while until a further crash. After several cycles of this sort of thing it does seem to settle down and becomes more stable.

Windows 10 Pro 64 - bit
Intel Core i5 4670 @ 3.40Ghz Haswell 2NM Technology
8.00 GB Dual-Channel DDR3 at 666 MHz
ASUSTeK Computer Inc. Z87 - K (socket 1150)
1863 GB Seagate Hard Drive

I have looked for any error records
The events recorded are the consequential events not the cause
No minidump file is produced
I interrupted boot and went to command prompt to look for the syste32 lof files but it showed only Drive "X" which was incomplete.

Ageing gamer would like advice on what I can do please.

I'm sure more information is required, if so, may I request guidance on how to obtain it.

Thanks

Glyn
Reply to treenol
4 answers Last reply
More about random crashes boot failure
  1. No minidump is produced because those only occur when the error happens within the OS. AKA Windows stop errors (BSOD). The black screen points directly to faulty hardware. Most likely the power supply.
    Reply to R4lNM4N
  2. 2047MB NVIDIA GeForce GTX 650 Ti (Gigabyte) is my graphics card - omitted on original post
    Reply to treenol
  3. I think I have moved a step on from where I was. I think there is a minute discontinuity in the circuit, this could be in the cabling, plugs/sockets, components or circuit board tracks. This is affected by variations in temperature (as stated, later in the day the stability improves (when the temperature settles down). I have re-seated all the plugs and moved the power supply cables to no avail. Of course, it could be within the PSU itself or inside the cabling. Even a slight movement of the case does sometimes cause a reboot. I plan to replace the PSu to see if that's the problem but, of course it could be the main board. Any advice on how to isolate the issue would be welcome.
    Reply to treenol
  4. treenol said:
    2047MB NVIDIA GeForce GTX 650 Ti (Gigabyte) is my graphics card - omitted on original post


    I've been getting random crashes the last few days. I thought it was a game (PUBG) but it looks like it's something with NVIDIA's newest driver for my card. It's randomly happening even while not gaming. Version 385.41. Same driver as yours, or at least it should be if you're keeping it up to date.

    I've been using "WhoCrashed" to analyze my dump file. I'm not getting a BSOD every time though. It's free software - worth a shot.
    Reply to R4lNM4N
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