The Sapphire PT-F2A85M-MA motherboard is powered down irregularly. Enter BIOSS and adjust the default voltage 1.4 to about 1.25. Find the H/W monitoring panel and turn on the CUP temperature protection.
The Xiaoyingba GTS450 does not display. When the RT9259A is replaced, the video memory resistor and VCC-PLL voltage are out. A BIOS is replaced, the first and second video memories are soldered, and the fault is still present. Replace a row of 0.1UF capacitors of Golden Finger, and the fault is contacted.