Question about Compaq (253219-002) Motherboard

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Upgrading power supply

Ihave a compaq motherboard #252608-001 with 24 pin and 4pin processer plug with a basic nvida vidieo card , I wanted to put in my nvidia 7600 gsoc vidio card but it states that the min req are that a 350 watt psu is needed, my system has a 250 watt in and works fine, however i went and bought a psu of 500 watts and installed into my computer but get no response (no power, no led lights on mother board)
when i rehook my 250 watt supply everything runs fine , is it posable that the motherboard wont take a 500 watt psu?
when i look at the 24 pinn plug the coolmaster 500 watt plug has pinns in all holes, the first 500 watt antec psu had one pinn missing from top row , and the 250 psu that works the computer with no problems has one pinn missing from bottom row.
all psu where tested and checked out good
with only two wires to motherboard its hard to mess up, i know thier in the coresponding holes but just get no response from motherboard or psu!
any suggestions?

thank you
paul

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The next time you get a PSU. Tell them what you have. Apparently you got one that is not compatible with your compaq.The power (500 wattage) will work with your MB.
Get an OEM PSU from Compaq(HP).

Posted on Dec 02, 2007

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All the information for your computers motherboard can be found here:

http://h10025.www1.hp.com/ewfrf/wc/document?docname=c00714521&tmp_task=prodinfoCategory&cc=us&dlc=en&lc=en&product=3190727#N534

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All modern video cards are PCI Express :)

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Best of luck, William
-------- " Replacement power supply for Compaq Presario SR2020NX- 550 Watt Replacement Power Supply Upgrade
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I don't have the manual for 277498-011


As for the Power Supply 99% sure it is an ATX which as long as you get the same Watt as the existing you will be okay. Make sure you look at your existing connectors to see if you have a 24 pin or 20pin motherboard and 4 pin or 8 pin additional power plug (black and yellow wires) and the new power supply has matching connectors....older ATX supplies have only 20 pins, but there are converters from 20 to 24 pin available.

Watch for the new power supplies and your drive connectors as some of the new power supplies have limited ATA plugs...if you have a lot of ATA devices you might need SATA power convertor plugs or ATA splitters to get all you ATA devices up.

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1 Answer

CASE DISASSEMBLY


first unscrew the cover of the computer, then
i suggest you take out all the connectors, so that you can dettach the power supply easily.remove the screws at the back of the power supply, which is in the back panel of the cpu chassis.
unplug the 24 or 20 pin connector from the cpu and all the power cords that supply the peripherals, take out the power supply and replace with a new one.
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Heres a video tutorial on the step by step process.
http://www.youtube.com/watch?v=Y_Ch2Tdj1fM

hope this will help you out.
Thank you: )

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