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no power to machine


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#1
radarbugs

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i was given an acer power fe desktop at work. the machine ran fine up until the graphic card went out. the guy that had been using it was the guy what does our shiop drawings and he ran autocad. they got him a new hp macnine so he gave me the acer. the it guy that works on all our machines moved back to asia but before he left he took the old graphic card out of it along with the ram memory sticke. i bought a new graphic card and 1 gig of ram and indstalled it but now it wont fire up. i know there is power to the psu but when i try to start it, the power light on the front blinks one time then wont do anything. i can unplug the power cord and leave it for a few minutes and retry but it does the same thiong. i know there is an inline fuse in the psu but dont know where it is ior what to do. any info will help.
2 year old acer powerfe
intel pentium 4 cpu
300 watt psu
dvd rom/rw

please give me some hints on how to power this rascal up. i was thinking that there may be a short some where.
thanks
radarbugs
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#2
radarbugs

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i was told that this topic would be closed because i accidentally posted twice. i dont think that is fair as i still need help with the problem i have . please help. i dont want to have to take my machine to a service shop.
thanx,
radarbugs
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#3
rshaffer61

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I closed the duplicated topic. This is the original that is open. There is no need to duplicate as it makes it harder for us to assist. Sorry if i confused you with the response I gave.
What graphics card did you get and what memory did you buy?
The memory should be PC3200 DDR SDRAM DIMMs
Is this your system HERE?
Do you get any post beep or beeps at all?
Have you tried to bench test the Motherboard by doing the following?

Disconnect everything from the Motherboard except
  • keyboard
  • mouse
  • video output
  • 20+4 powercable
  • 4/8 pin 12v wire both coming from the powersupply,
  • Cpu fan wire
  • power and reset button to the case
  • case speaker
Now you should have NOTHING connected to the motherboard except what was listed above.

The goal here is just to test the mobo:
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#4
radarbugs

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yes that is my machine only mines a few years older. i disconnected everything you said and nothing.
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#5
rshaffer61

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OK then you may very well be looking at a bad PSU or Motherboard. The next step to verify this would to be to take the motherboard completely out of the system and do a external bench test on the system. If you are ready to tackle that then here are the instructions to do this.


If the computer still will not boot up the please remove the motherboard from the computer along with the power supply

place the motherboard on a piece of card board larger than the motherboard,

this will eliminate a short from the mobo to the case which could be a possibility
Install the cpu with, 1 stick ram in dimm 1, power supply, case switch and case speaker
Connect ps2 mouse and keyboard along with the monitor
Repeat the above and power on
If the computer now boots into bios you most likely had a case short so make sure when installing the motherboard in the case that you use standoffs,
and they line up with the mounting holes in the motherboard and none of the standoffs touch anything else on the underside of the board.


Thanks to Cbarnard for these instructions
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