Why AsRock P43DE3 won't start?

Question

Iron

Patient: an old system unit covered with dust under the control of AsRock P43DE3
Background: the BIOS firmware used to fly off for unknown reasons, it was treated with a firmware programmer.
Symptoms: it doesn't start, the cooler spins for a full 7 seconds, it reboots - the cooler spins again for full, but at least until the pulse is lost, without a squeak.
What was done:
1. Cleaned of dust, lubricated with a thermal, replaced the tablet
2. Flashing the latest version of the BIOS with a programmer for a new Winbond W25Q32 chip (there were no others).
3. Replacement / Check RAM, PSU
Question: There are doubts about the flash drive, because. the native chip, as far as I remember, was W25Q *, but I don’t remember which one (it itself has evaporated and there is no way to find it). In terms of spi parameters, they (80/16/32) are identical, except for the size of course (ami bios 8 is 8 MB in size). According to the requirements for SPI, the chip seems to be suitable:
Intel® ICH10 SPI Based BIOS Requirements
A serial flash device must meet the following minimum requirements when used
explicitly for system BIOS storage.
• Erase size capability of at least one of the following: 64 KB, 8 KB, 4 KB, or
256 bytes.
• Device must support multiple writes to a page without requiring a preceding erase
cycle (Refer to Section 5.23.5)
• Serial flash device must ignore the upper address bits such that an address of
FFFFFFh aliases to the top of the flash memory.
• SPI Compatible Mode 0 support (clock phase is 0 and data is latched on the rising
edge of the clock).
• If the device receives a command that is not supported or incomplete (less than 8
bits), the device must complete the cycle gracefully without any impact on the flash
content.
• An erase command (page, sector, block, chip, etc.) must set all bits inside the
designated area (page, sector, block, chip, etc.) to 1 (Fh).
• Status Register bit 0 must be set to 1 when a write, erase or write to status register
is in progress and cleared to 0 when a write or erase is NOT in progress.
• Devices requiring the Write Enable command mst automatically clear the Write
Enable Latch at the end of Data Program instructions.
• Byte write must be supported. The flexibility to perform a write between 1 byte to
64 bytes is recommended.
• Hardware Sequencing requirements are optional in BIOS only platforms.
• SPI flash parts that do not meet Hardware sequencing command set requirements
may work in BIOS only platforms via software sequencing.

Answer 1

Return the mother to the factory state, then plug in the POST card and come back with the received data.