Because when i put on the DDD333(256mb) memory on my board and i paired it with a DDR400(512MB) memory my cpu shuts. and when it restarts it will only detect the DDR400 memory. can u help?

1) All of your memory must be compatible with your motherboard (DDR, DDR2, or DDR3 and speed and latency). For best results, if you have dual channel capability, each pair of memory sticks should be matched. (Usually consecutive serial numbers indicate pairs from a given manufacturer.) Both sets of memory should be rated at the same speed (or the slowest speed will be your memory speed). Some motherboards may not work with all 4 slots occupied unless the memory was certified to work as a set of 4.

2) Which motherboard do you have? The motherboard manufacturer and memory companies often will have lists of compatible memory. The motherboard manufacturer will also have information on the dual-channel pairing.

My current and previous motherboards have had memory slots in color pairs (blue, black). For my boards, I put the sticks in the blue slots (A2 and B2) first. (Preferably these should be the largest memory capacity.) Then I put the second pair of memory into the black slots (A1 and B1). DIMM slot A1 is closest to the CPU; B2 is the farthest away from the CPU.

Depending on your CPU cooler, you may need to remove it or modify it to use all 4 DIMM slots.

Observe the appropriate steps to avoid static discharges while handling your memory and when inside your computer. For actually inserting the memory, make sure that the locks (white on my motherboards) are fully open (hinged away from the slot). Line up your memory so that the slot in the memory is on top of the key in the slot and the memory is centered in the slot. It will only line up one way; the wrong memory type will not line up. Push your memory stick down fully until the locking clips rotate up and fully engage the memory. (You may need to push down at multiple places to get it fully seated.) You will then repeat the procedure with the rest of the memory.

Note: if you get a memory error, three beeps (on many boards), you will need to remove the memory and test one stick at a time in the A2 slot (for example). Then test pairs of slots. It is not unknown for either one stick to be bad or one slot to be bad. Look at the total memory your OS identifies, if you manage to boot in spite of any issues. Running Memtest may be needed but even that may not identify which specific memory segment is bad.

I hope this helps.

Cindy Wells
(who has installed or replaced memory since giving an 286 computer a full megabyte of memory. DIMMs are a lot harder to mess up as long as you have the correct memory. Note: most of the different DIMM types have different number of pins; thus sometimes it's very easy to tell that the wrong memory is being used. This isn't always the case.)

Hi m5mm, what kind of Operating system are you using?

It could be the hard drive, bad memory sticks. Power off, remove and re-seat the memory sticks as a test.

I suggest that you will open the cpu and look for wire that will connect from the restart button to the motherboard. If you have set up manual of the mother board, just follow color code of the wire that will be plugged in to motherboard. ASUS and other motherboards have connection of the wires located below the circuit board just in line with the tiny colored wires entwined by pairs.

Hi eakesj:
A number of things here should be checked.
First shut down and remove all cards, and power connections to all the drives such as cdroms, hard drives.
The power supply should also be looked at and tested for correct voltages on each wire. This can be done with a voltage meter.
Turn on the power and see if you can get the machine to start to the bios screen. (this will work if you have a video processor on board, if you have a video card, you will need it to use the monitor).
If that will not work, then you have more problems than you thought at the beginning.
If the mother board will not work at this point, then you have problems with either the mother board or the cpu processor. There is a possibility that there are problems with the memory modules.
So, if you have only one memory module, then I would remove the memory, carefully clean the contacts, (a clean pencil eraser can work, if you are careful, and do not press very hard) and then plug the memory back in and try again. Also if you have extra modules of the same type, try one for testing.
If you are still having the same problems, then the mother board or the cpu is the problem. At this point you should consider if you want to continue and repair or buy another mother board of the same size. If you buy another kind of mother board, remember you will have to re-install your operating system over the original one to get the complete setup and the bios to work correctly with it. Many times this can be done, but you risk losing data (you will lose all data in MY DOCUMENTS), and may have to completely re-install the OS. You may want to install the drive in another computer as a slave and back up any data you want to save before you proceed.
If you decide to continue with your original mother board, and still have problems, then the cpu or the mother board is suspect. To test the cpu, either test your board with another cpu which is compatible, or check the mother board with another mother board of the same exact model.
Hope you find the problem.

Hi ,
u check almost all ....
also check with u r power buton of front panel of pc if this button is get short then it is possible .....please disconnect switch from board & just short with any metal ....if u r pc is not geting shut down please replace rower switch ...


if this information is useful for u please Rate me........

check your video card remove from the system then clean up the gold tip second remove the memory then clean up the gold tip then put it back to the board then restart your CPU

When you take the cover off and start up, are all of the fans spinning? If the CPU fan doesn't spin, the system will shut down soon after starting to prevent over heating the CPU

Yes and no. Depends on the motherboard and the type of memory. On some boards you have to add memory in pairs, others you can add one stick, then there's parity, etc, etc. Check the memory that's on the board, check the manual to see how it recommends you upgrade memory. One wrong stick can turn your new CPU into a nice end table.

Let us know what you find out.

Hi, Mistyman here. All Asus mother boards that have dual channel RAM slot must have equal ram in each slot. In most cases the paired slots are matched by color for easy ID, some are identified by a printed ID on the mother board. With your board you will have to have run all of your RAM for the one CPU. If you have only one stick this must be in slot one. If you are using two sticks then utilise the dual chanel system that ASUS have and use A1 & A3. To activate the second CPU you will need to install matching sticks of RAM in the B slots. both cpu's will need to have the value of RAM to work together properly. CPU one = slot A for RAM CPU two = Slot B for RAM. Goodluck, the ASUS boards are a value product.