hardware Black screen, no POST, Windows won't start

[sempir0]

My specs:

• Win 10 x64
• Intel Core i7-6700K
• Nvidia GTX 1060-6GB
• MSI Z170A GAMING M3 (MS-7978)
• Crucial MX300 275GB (system drive)
• Seagate Barracuda 2TB
• Corsair Vengeance LPX DDR4 3000 C15 4x4GB
• Pure Power 11 600W

It started months ago, my computer would freeze randomly and Windows wouldn't boot again - machine starts, lights are on, fans are running but the screen is pitch black, no logo, no "press DEL for setup", nothing. No PC speaker sounds as well. Sometimes Windows would start after a minute or two or the computer remained in this state until I tried turning it on and off a couple of times.

 

It started becoming more common and random - there were weeks with no issues or days where I wasn't able to use my PC because it just refused to start. I tried changing my PSU to new one (it's listed above) but it didn't help.

 

I took it to repair and it ran perfectly when they turned it on. They kept it for over a week, cleaned it up, checked RAM, voltage, cooling, checked if everything is plugged correctly. They gave it back and said there were no issues with my computer. It worked well for month or something but the problem started occuring again, though this time if the computer passed POST screen it wouldn't start because it couldn't access system files (all of them at once, everything ending with .sys) according to the errors (one was ending with with "21a" iirc). I tested my drives with crystaldisk and some other software (I don't remember the name) - they appeared healthy.

 

I reinstalled Windows, PC worked fine for a day (no file errors anymore), but today it's same old thing, screen is black when I turn it on and nothing happens. Removing GPU or unplugging disks doesn't change anything.

 

I don't know which version of BIOS I have but I did update it some time ago hoping it'd help. I also tried resetting CMOS. I never overclocked my PC and didn't change anything in BIOS settings. All my drives are up to date. I checked multiple times and I didn't have any viruses.

[glenalz81]

Have you tried removing the GPU and running integrated graphics for a few days to see if the problem persists?

[sempir0]

1 minute ago, glenalz81 said:

Have you tried removing the GPU and running integrated graphics for a few days to see if the problem persists?

For a few? Nope, not longer than a day or two.

[glenalz81]

Has it happened on integrated graphics also?

 

[sempir0]

2 minutes ago, glenalz81 said:

Has it happened on integrated graphics also?

 

Yes, there is no difference.

[seagate_surfer]

8 hours ago, sempir0 said:

I reinstalled Windows, PC worked fine for a day (no file errors anymore), but today it's same old thing, screen is black when I turn it on and nothing happens. Removing GPU or unplugging disks doesn't change anything.

 

I don't know which version of BIOS I have but I did update it some time ago hoping it'd help. I also tried resetting CMOS. I never overclocked my PC and didn't change anything in BIOS settings. All my drives are up to date. I checked multiple times and I didn't have any viruses.

I was going to suggest this but now that I see you did it already I think you may have a problem with your drives, regardless of the tools you used you should better check with the manufacturer's tools, you also may need to upgrade the firmware in your storage equipment and hopefully it will solve it. There is a low power consumption feature that causes problems similar to this, when the unit stays unused for some time and goes idle it lowers its consumption of energy but for some reason it cannot wake up back, that results on a drive that doesn't have enough power to operate and thus fails on you after you reboot the machine a couple of times...