|"Asus Motherboard socket 7 ali chipset dimm 2 isa 5 pci atx mbd"|
Your mboard is about ten years old.
What model is it?
That's probably printed in larger characters on the surface of the mboard
If you HAVE NOT been fiddling with anything inside the computer case since the computer last worked properly, and if you HAVE NOT been trying to overclock this mboard, then the most likely thing is your power supply is failing or is dead.
Failing power supplies are common and can cause your symptoms.
Check your PS.
They often partially work, fans and hard drives may spin, leds may come on, yet you may get no video and the mboard will not boot all the way.
See response 4 in this:
If it is failing, you can usually replace it with any decent standard sized standard ATX PS with the same capacity or greater.
Standard (PS/2) power supply size - 86mm high, 150mm wide, 140mm deep, or 3 3/8" h x 5 7/8" w x 5 1/2" d , or very close to that, though the depth can be more or less for some PSs.
Don't buy an el-cheapo PS.
See response 3 in this:
If you HAVE been fiddling with anything inside the computer case since the computer last worked properly, and/or if you HAVE been trying to overclock this mboard, tell us what you tried to do, and with what.
Did you unplug the computer, or otherwise switch off AC to the computer, before and while fiddling inside the computer case?
If you were fiddling with a video card in a slot....
- did you make sure thecard is all the way down in it's slot, and fastened down with a screw, before you booted?
- if you did NOT unplug the computer, or otherwise switch off AC to the computer, while plugging in or unplugging the card, there's a strong possibility you have fried the card or the AGP or PCI circuits in the slot you installed it in.
There's no way this Socket 7 mboard chipset can run any cpu at 712 mhz.
If that's the amount of ram, I know of no combination of modules that would yield you 712mb, even when the mboard has onboard video and the bios deducts the amount shared with the onboard video. Is that a typo? If it isn't, did you only get that total after installing ram modules that were not installed in this mboard before?
If you DID change any of the ram modules from what worked fine previously, they must all be compatible with the mboard's main chipset - e.g. if you use a PC133 8 chip 256mb module, the mboard will probably not boot and you will get no video.
It is easy to test for incompatible ram that has caused your mboard to fail to boot.
Make sure you have a speaker or speakers or the equivalent connected to the mboard so you can hear mboard beeps (see your mboard manual if you need to).
Remove the AC power to the case/power supply.
Remove all the ram.
Restore AC power.
Try to boot.
If nothing else is wrong, you will get no video but you will hear a pattern of beeps that indicate no ram is installed, or a ram problem.
E.g. for an Award bios or a bios based on one, that's often a beep of about a half second, silence for a half second, a beep of about a half second, silence for a half second, continuously.