Posted early by accident- still adding to this
Alright folks, I’m at my wits’ end with my machine here, hoping someone here can help! <3
To start, here’s a run-down of my build:
CPU: i7-7700K 4.20GHz
RAM: 16GB DDR3-1066 - Brand is Corsair, not sure on further details.
GPU: Gigabyte GTX 1070
Motherboard: Gigabyte B250-HD3
PSU: Cooler Master Silent Pro 700W Modular
This has been my main machine for nearly a decade, though every individual part has been replaced various times so it’s a real ship of theseus situation. The most recent hardware change was around a year and a half ago, when I upgraded the motherboard, CPU, and GPU all at once. There have been no hardware changes since, and no problems until now.
It’s very hard to nail down how the problem even manifests, but I’ll do my best. When the PC is on and in use, it will generally stay on. When left alone- typically for around 30 minutes or more- I will return to find it either stuck in a boot-loop, or sitting at a “Windows did not start correctly” blue screen.
If it’s stuck in a boot-loop or if it’s turned off, it’s extremely difficult to get it back on again. The boot-loop is inconsistent and unpredictable. Sometimes the PC will seem to turn on for less than a second before shutting back down. Other times it will make it to the POST screen before shutting down. Sometimes it will make it as far as loading into Windows before shutting down. When I can finally get it to reach Windows, it will (with few exceptions) stay on while I use it.
Until it reaches Windows, it will seem to loop through those states endlessly with no pattern that I can find. Sometimes rapidly turning itself on and off for only a second or two, other times getting to POST repeatedly, and mixtures of all of the above.
When it’s in this state, I have found no reliable way to get it to successfully load Windows. I literally just keep trying until it works, and this has taken the better part of an hour some days.
What I’ve Tried:
Narrowing the problem by removing components individually one at a time. Through this process I’ve recorded that the problem still occurs in exactly the same way when:
- GPU is removed
- Hard drives are removed
- RAM sticks are swapped, placed in different slots, or absent altogether
- All connections to the case are removed except for the power button.
I have also tried:
- Updating all drivers for all hardware
- Reflashing/updating motherboard BIOS
- Resetting motherboard CMOS, both by removing the battery for a time, and also using the CMOS reset function on the board.
- Replacing the CMOS battery.
- Adjusting power usage settings both in Windows and in the BIOS. Disabling power-saving features like C1E and EIST (The fact that it would seem to happen while I was away from the machine made me suspect this, but I’ve observed no change)
- Checking and re-seating every physical connection both interior and exterior.
- Checking every contact point with screws/metal/case etc. for potential shorts or missing standoffs
Where I’m at:
My budget is extremely limited and I don’t have spare PC parts lying around to test with, which means I will have difficulty narrowing the problem further. This suggests to me that there are three possible culprits: the Motherboard, the CPU, or the Power Supply. Without alternates of any of those, I dont’ know how to narrow it further, and I don’t know what else I can try.
I am looking at local repair shops but my budget is such that taking the PC to a shop might literally mean I then don’t have the money to replace whatever isn’t working.
Any and all ideas are welcome. I’m at the end of my rope with this thing.