After entering the system, no matter how to use it, there is no problem. Does the computer need to be preheated before it can be used normally? This is generally caused by lack of motivation.
The following Hangzhou computer training/look at the author's computer repeatedly started the maintenance process due to insufficient power.
Replace the graphics card slot and DVI interface. Nowadays, there are generally two PCIe slots in the middle and high-end motherboards, and different PCIe slots will have different power supply and bandwidth.
First, try to switch the graphics card to another PCIe slot to see if it can return to normal.
Secondly, change the DVI line into an interface.
Note that before replacing the PCIe slot or DVI interface, these interfaces must be cleaned once to avoid the influence of dust accumulated inside.
Upgrade the motherboard BIOS and restore to the default settings. Although the probability of this problem is quite small, it cannot be ruled out, especially for some second-tier brands, it is more likely that various failures are caused by BIOS bugs.
So try to lower the BIOS price and upgrade to the latest version. After the upgrade, do nothing, keep the BIOS in the default state, and see if the computer can start normally.
Check the frequency of the graphics card If the frequency of the graphics card is too high, the core voltage of the graphics card does not increase correspondingly, which may be that the graphics card is unstable. This intermittent inability to boot is also one of the manifestations of instability.
So if the graphics card has been overclocked, the graphics card frequency will drop to the default setting, and the core voltage must be restored.
Replace the power interface of the graphics card There are some problems in the design of the power interface of the 6-pin graphics card. You can try various combinations to maximize the power output capacity: both 6-pin interfaces are connected by a 4-pin D port; One 6-pin interface is connected to the D port, and the other is the original 6-pin interface of the power supply; Both 6-pin connectors come with the power supply.
Generally, if the fault is caused by "single/double 12V output" in the power supply, this method can solve the problem.
In fact, the biggest reason for this failure should still be the power supply, especially for computers with high-end graphics cards. The power at startup is generally quite large. If the peak power of the power supply is just above this threshold, it may cause the situation that it can be started sometimes and cannot be started sometimes.
Therefore, it is necessary to replace the power supply with higher power.
Generally, graphics cards above GTX470 adopt high-frequency quad-core processor platform, which requires a power supply with rated power above 600W, while graphics cards above HD5850 adopt high-frequency quad-core processor platform, which also requires at least 550W W.