Why does my computer crash for no apparent reason?

Question

Windows

Info about my computer is as follows:

Operating system Microsoft Windows 10 Pro

Processor Intel Core i7-4790K, 4400 MHz Motherboard

Asus Maximus VI Extreme

BIOS type AMI (01/28/2014)

Video adapter NVIDIA GeForce GTX 1070 (8 GB)

HDD 1 Samsung SSD 860 EVO 250GB (250GB, SATA-III)

Disk Drive 2 ST3000VX000-1ES166 (3TB, 7200 RPM, SATA-III)

DIMM2: Kingston HyperX KHX1866C10D3/8G 8GB DDR3-1866 DDR3 SDRAM (13-11-10- 30 @ 933 MHz) (11-11-10-30 @ 933 MHz) (10-11-10-30 @ 933 MHz) (9-10-9-28 @ 841 MHz) (8-9-8-25 @ 747 MHz) (7-8-7-22 @ 654 MHz) (6-7-6-19 @ 560 MHz) (5-6-5-16 @ 467 MHz)

DIMM4: Kingston HyperX KHX1866C10D3/8G 8GB DDR3-1866 DDR3 SDRAM (13-11-10-30 @ 933MHz) (11-11-10-30 @ 933MHz) (10-11-10-30 @ 933MHz) (9-10-9-28 @ 841 MHz) (8-9-8-25 @ 747 MHz) (7-8-7-22 @ 654 MHz) (6-7-6-19 @ 560 MHz) (5 -6-5-16 @ 467 MHz)

Seasonic SS-760XP Power Supply

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So, to the core of the problem
My computer is crashing, I can’t even understand why, it crashes when I do some completely insignificant tasks, or when I play demanding games, it can crash at any time, I never use its resources 100%, above 65 degrees Celsius, the percentage never heats up, at rest 40-45. When the computer crashes, the picture just freezes, and after about 5 minutes the death screen appears, the error in most cases is CLOCK WATCHDOG TIMEOUT, but there were also cases when other errors appeared, for example IRQL_NOT_LESS_OR_EQUAL and SYSTEM_SERVICE_EXCEPTION. The most interesting thing here is that if you reinstall Windows, crashes disappear for 3-4 months. Basically I was told that the problem is in the old drivers, but lately I have been following this very well, but it does not help. Help good people, my strength is gone,

Answer 1

Test the RAM in memtest86, several cycles (5..10).
Since the motherboard and processor are old, it is logical to assume that the RAM is of the same age. Memory chips degrade faster with age than a processor, so after a few years the chance of memory errors increases significantly. And you also have HyperX, which is overclocked from the factory beyond measure, it has worked at the limit of its physical capabilities since birth.
You can manually lower the frequency of the RAM in the BIOS.
The motherboard, of course, could also start to glitch for so many years. This is the second suspect after memory.