Nine possible specific models Compaq Presario 6000Z Desktop:
Find the product number, xxxxxx-xxx , or the specific model code, e.g. 6ZPXEH , on the label that's on the outside of the case somewhere.
It probably has a ZZ TOP socket A (462 ) mboard with an Athon XPxxxx cpu on it, part number 261671-001, 261671-002, or 261671-004
Open up your case and examine the mboard to see if you have bad capacitors, and/or other findable signs of mboard damage .
This was the original bad capacitor problem - has some example pictures.
History of why the exploding capacitors and which mboard makers were affected:
What to look for, mboard symptoms, example pictures:
Home page that site
- what the problem is caused by
- he says there are STILL bad capacitors on more recent mboards.
Pictures of blown capacitors, other components - power supplies, Athlon cpu's, etc.:
If you see no signs of that....
Check all the connections of the wiring to make sure they are all the way onto their pins and into their sockets, especially the main connector from the power supply. The wires close to the mboard going into the main power connector/socket should be more or less perpendicular to the mboard surface rather than at an angle. Make sure all cards in slots are all the way down in their slots.
If the cpu fan blade does NOT move easily when you turn to spin it with your finger, you can be fairly certain the mboard did not shut down when the cpu got too hot, and the cpu is fried.
The cpu fan probably must be connected to the 3 pin header for the cpu fan and it must have 3 wires, and the cpu fan must spin, otherwise, depending on bios defaults or settings, lots of mboards will shut down in a very short time after the computer is booted to prevent the cpu from frying (or you can connect any other 3 wire fan to test if there's power there at the header , but that doesn't cool the cpu ).
If the cpu fan blade moves easily when you turn to spin it with your finger, there's probably nothing wrong with the cpu fan when it doesn't spin. It's usually easy to remove it from the heatsink and try it in another computer.
If the cpu fan does NOT spin on another computer, the mboard may not have shut down when the cpu got too hot, and the cpu may be fried.
If you manage to get the cpu fan or another cpu fan to spin....
If you HAVE NOT changed which ram you have installed since the computer last worked properly, or in any case....
See response 2 in this - try cleaning the contacts on the ram modules, and making sure the modules are properly seated:
Try booting the computer.
If you DID change which ram you have installed, the ram you installed may be incompatible with the mboard.
If you knowwhich ram you had installed before, try installing ONLY that ram, try the computer.
If you don't know or aren't sure which ram was installed....
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.
Your system had either a 200 watt or a 235 watt power supply. Sometimes when apower supply malfunctions or fails, it fries the mboard, and a replacement power supply does not result in the system working.
Check the original power supply.
Failing power supplies are common and can cause your symptoms.
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: