|Do you have the manual for the mboard?|
It says in mine
For optimum signal integrity, inserting the DIMMs..." (populating the slots) "....in the following order is recommended: DIMM1, DIMM2, DIMM3"
"DO NOT attempt to mix SDRAMS with VCM SDRAMS."
(VCM SDRAM is rare).
"This motherboard also supports NEC's Virtual Channel (VC) SDRAM" (it's rare).
512mb ram must be double sided - have 16 (or 18) chips
From a review I found on the web:
The default voltage on the ASUS K7V makes 3.4V instead of the nominal 3.3V. Nevertheless, ASUS decided to take the risk with its K7V mainboard and left on it a jumper that allowed changing voltage to a standard value. By the way, we wished they had never done this. At 3.4V voltage on I/O circuits ASUS K7V operates impeccably, demonstrating high stability and reliability, but at the official 3.3V voltage the mainboard's stability leaves much to be desired.
the mainboard has a jumper that allows supplying up to 3.56V to AGP, memory and chipset.
(VIO header near 20 pin socket; presently on 3.4; can be set to 3.3, 3.4, or 3.56)
The continuous error beeps are commonly made by Award bioses when you have a ram error.
You must make sure the ram you install is compatible with the mboard's main chipset.
It the ram passes diagnostic tests in all circumstances (sometimes you MUST populate the ram slots in a certain order), there's nothing wrong with it, or with it's connection to the slot.
- See response one in this for lots of info about that: