Ace enter! It s a complicated question! 10

You double-check whether it is the sound of the monitor, the way is to turn off the monitor when there is sound to see if there is any sound, if the sound of the monitor, there may be 2 reasons.

1. A certain diode is loose.

2. It's time to withdraw from the stage of history.

It should be sent out of the display,The display electron gun has high pressure,It may emit this sound,In fact, the TV has it,It's just that I don't usually pay much attention to it。 In addition, the power supply will emit acoustic noise even under heavy load, but it is unlikely that it is close to the limit at that time.

I also have such a problem in my machine, I eliminated it like this, to see if it is useful for your machine, first disassemble the case, blow off the dust inside with a hair dryer, and then clean up the dust of each fan (power supply, motherboard, CPU), the CPU radiator should also be cleaned, the place where the CPU and the radiator are in contact with a little silicone and then installed, and the memory module was also taken down to clean up, I spent 2 hours cleaning it clean, the hateful sound is gone, and the sound of the machine starting is much smaller.

Mine too, it's just running some DOS programs

Put the motherboard on the PC speaker! Pull! 、

If you really can't, then: Wake up your ears!

Probably your computer alarmed. See if the CPU temperature is too high, and you have set the temperature alarm in the CMOS?

Looking at your problem description, there is a flashlight scanning there to scan the system icon when reading and writing the hard disk, and you directly restarted the computer several times when the computer was running normally, so it personally feels like a problem with the hard disk.

1. It is a software problem, because an abnormal restart will cause the system files to be lost, which will make the computer slow down when in use. Workaround, reinstall the system.

2. It is a hardware problem (hard disk problem), if it will, it is recommended to scan the hard disk to see if there are any bad sectors, and if not, it will have to be replaced.

In the way of difficulty, let's reinstall the system first.

It is clear that the hard drive has been damaged.

In addition, it is better to emphasize that Jinshan Poison Bully is better to uninstall it immediately, and I don't want to talk about it.

Yours isn't win98, right?,And a flashlight?! ...

This problem has nothing to do with Lobida's rule, but uses the general solution formula for first-order linear differential equations in ordinary differential equations:

The article is entitled to: f'(x) -f(x) = 0 then f(x) = [e (-1)dx)] 0[e ( 1)dx)]dx + c )

e^x] (0 + c )= ce^x

Since f(0)=1, then f(0)= ce 0 = c =1 , so c=1

So: f(x)=e x

If you don't use the general solution formula, you can do it: f'(x) = f(x) dy dx = y dy y = dx, both sides are integrated at the same time, and the :

lny = x + lnc y = ce x, in the same way c=1, f(x)=e x

First, if f(x)=g(x)=e x, it is clear that g'=g, g(0)=e^0=1

Suppose that there is another solution h(x) satisfying h in addition to the second'=h, h(0)=1, subtract the two equations to get (g-h).'=g-h, g(0)-h(0)=0 so k(x)=g(x)-h(x).

k'=k, k(0)=0

k'is a symbol of the change in the value of the function, but at the initial point x=0, k is 0, and the initial velocity k'=k=0

So after a short period of time, the value of the function is still 0, because the rate of change is 0, and based on that, it can be concluded.

k always = 0 so g = h

So f(x)=e x is the only solution, and the proof is complete.

Lopida's rule, although it is not a universal method, but the most important method to find the limit, more than eighty percent of the limit problems in high numbers should be used, and it is also the most effective, with which it can solve the vast majority of 0 to 0 type, infinity to poor type.

When 144 pieces were sold, the maximum profit was 6,528 yuan.

Solution: If you drop n 2 yuan, you can get the maximum profit Y when you sell (120+6N) pieces.

200-144)-2n] x(120+6n)=y, -12n+96n+6720=y

When n = -96 (-12x2)=96 24=4, when (120+6n)=120+6x4=144 pieces are sold, the maximum profit = y = [4(-12)x6720-96] (-12x4)=6528 yuan.

Three years ago, more than 3,000 computers are now playing Crossfire. I don't know what configuration you have, I can't say it specifically.

As you said, the hard disk may have a big problem, I have encountered the same problem as you before, and I have changed a lot of things, but it has not solved the problem. It was much better to change the hard drive later. But this is a palliative but not a cure, after all, it is a computer three years ago, and it is estimated that the configuration of more than 300 is not high.

You'd better change to a new host, and it's about 3,000 according to your requirements. Recommended configuration; The i3 third-generation CPU is more than 600-700, the Gigabyte or ASUS motherboard is about 500, and the 4G3 generation memory is about 300. About 200 power supply, more than 400 1t hard disks, and finally choose a good graphics card.

I don't know much about the graphics card model, I only know that more than 500 is more than enough. Don't buy 23-line brand things, even if the configuration is high, the quality is not as low as the 12-line configuration. The graphics card is colorful and average, but it is cost-effective.

If you're willing to spend money, consider a high-end graphics card.

CPU Intel is good, AMD I used to like it very much, but since I used the i3, I never buy AMD again.

Specifically** depending on your market situation. Model you go to the computer seller and tell them the configuration requirements, and they will tell you. Now there are only a few chips on the market, as long as the CPU model is set, there is basically not much change.

Let's take a look at your computer's heat dissipation. In summer, the weather is hot and if the heat dissipation of the computer is not good, it is easy to crash and restart. If there is no problem with heat dissipation, it is most likely a power supply problem.