My memory is 256 and someone else gave me 512 and I pressed it and the screen went black 15

I know,That's your system must be windosxp,Your memory module is incompatible with that 512 I dare to guarantee that you put 512 on,Take out 256,It's definitely good,Generally every time you do that,It's best to either be 512 or 1024,It's best not to change it casually,Computers generally use the base number is good,In one point or two memory sticks,It's not good to beat the beat,I don't know if I'm right, hehe, give points!

It should be that your two strips are incompatible.

Two memory pads need to be plugged into one motherboard, and the model must be the same. For example, DDR 400, DDR 667 and other models that require these memories are the same.

The best is produced by the same producer.

Now the memory is also quite cheap, you can also go and change to a new 1G one, which doesn't cost much.

Remove your 256 and replace the 512 with a try.

Try a different slot, this problem is difficult to solve!

Update the graphics card driver, your driver is not compatible with this graphics card.

Incompatible!!

The problem is normal!

It is recommended not to mix it up!

The best brand!

Preferably one!

Incompatible, is your machine configuration card so dead, dizzy

Unplug it and wipe it and try it on the plug.

If there is a problem with compatibility, use 512.

If it is not compatible, first look at the model that the motherboard is suitable for, and then find the model that is consistent.

It may be incompatible and not replaced. If there is a problem with the memory or it is not installed, the motherboard will have a Didi alarm.

First of all, it is recommended that you check whether the gold finger of the memory module is clean, and it is recommended that you take it out and use an eraser to wipe the metal contacts of the memory module.

Second, it's not recommended that you mix memory modules.

Finally, if the above methods are not good, go for a memory module.

Wipe down the memory slots and don't plug the newly purchased memory into slots of the same color.

The simultaneous use of 256 and 512 may not be compatible! It must be the same brand of memory, two 256 or 521 with the same memory as possible, so that the operation will be more stable.

It could also be that your CPU or configuration can't keep up with your memory!

Incompatible!!

The problem is normal!

It is recommended not to mix it up!

The best brand!

Preferably one!

The two memory modules do not work at the same frequency. Remove that 256's.

If you want to insert two of them.

The best brand!

It should be 512's memory module is broken, so try plugging it in another machine, and if that's the case, you can only buy a new one.

**512M memory less than 200, 1G memory less than 300 are all fakes or parallel imports. Including ADATA too. I'm in the computer accessories business, and it's hard to get these genuine memories in Beijing.

Almost all of them are parallel imports. Like the 1G Kingstone, the lowest purchase price of the genuine version last month was 288, and the 1G ADATA was about 270, I believe that no dealer will sell it to you at the original price. If you don't really care about quality and after-sales things, you can consider parallel trading.

Secondly, do you install a 256 memory or dismantle the original 256 and reinsert the jump strip 512? If it's the former, it's a pity that even the brand you asked for above has been discontinued with 256 memory. If you can buy it, it must be inventory, or even repair goods (refurbished second-hand), quality and after-sales can not be guaranteed, people have stopped production, how can there be something to replace you if it is broken!

Do you want that?

Moreover, what is the frequency of your memory? If there is a difference between the new memory and the old clock, there will be some unexpected problems in some cases (which is why experts recommend adding the same frequency as the original memory when upgrading, instead of blindly letting you buy more advanced and advanced memory).

If it's the latter, isn't your original strip a waste?

My suggestion is that you should consider buying 1G of RAM, which is not much more expensive than the 512 and is currently the mainstream in the market. I recommend Weijin, the quality and after-sales are good (the quality is similar to Kingston, and the after-sales is far better than Kingston), and the ordinary grade of goods ** should be about 240. Think for yourself, it's a good idea to check with your local dealer for more accurate information locally.

So as not to buy the wrong one and waste money.

The old yellow calendar,256Memory shows that yours is a generation of memory,There is no need to upgrade,Upgrade the motherboard together,64M graphics card is also an old antique,Brother,Don't say anything,Just one word:change!

Add a second-hand 256 for about 40 yuan, a single 512 for about 80 yuan, and 1g for about 130. All of the above ** are second-hand prices. There are also new products, and there are too many fake and parallel goods.

If you still want to use the original root, you should buy the same frequency as the original one to ensure its compatibility. Hope it helps. (Why did that friend copy my answer)?

How many generations are your memory modules? If you buy 1g if you are a generation, it will be about 100 fast if you buy it (second-hand). Graphics card 20 or 30 fast is also second-hand**.

2。The speed of the computer mainly depends on the CPU, if you want to upgrade, buy a second-hand memory module, called a good deal.

The memory is broken. And it's half broken memory chips.

You write that there is an unknown, and your situation means that there is a useless one.

Either it's compatible, or it's not plugged in.

256 memory can't do anything now. Especially if you're less than 400mhz.

LZ, let's be more careful. You are 1st generation memory. I don't know if your motherboard supports the 3rd generation.

If you don't support it, then lz can think about it. If you want to change it, but the motherboard, graphics card, and memory are all changed, which is similar to changing the whole machine.

It's better to buy a new one.

If you don't want to change your computer for the time being. Just swap the memory. Remember to buy 1 generation of RAM. If you don't understand, you can ask someone from a computer store to take a look.

Now the stock within the first generation is extinct. However, there may be some second-hand inventory.

Faint ......You're obviously two 256M memory sticks! There is a problem with one of the DDR333 memory modules,If you just use this one,,It shouldn't be able to turn on.,Remove it.,Just replace it with a 512M.,CPU、Memory、The graphics card is too low。

The system itself also has to be occupied.

That is, the onboard graphics card is divided into 256

Yes.

It's not plugged in, or the system doesn't read out your other 256, the machine is very old and should have been phased out 5 years ago.

Look at the task manager, if it's 512 it's fine.

Can the landlord change a memory module, about 100 for 2G As long as it's not Kingston, others can be, Kingston has a lot of fakes.

Wood has been identified out of the sprinkle, and it is good to have fun by yourself.

That's right, it's all 512, but the systematic program uses half of it.

It is recommended that you still change to 512 or 1g, and there may be incompatibility problems if you change it that way.

Yes, you can plug two memory sticks into your computer.

Your RAM should be 400 DDR, no problem.

Generally yes... However, there may be compatibility issues.

When the screen goes black, check if the temperature of the processor and graphics card is normal. Whether or not the CMOS is protected from high temperatures.