Power Supply?

Hello there, this is my first post and i cannot find any post alike to the situation i have....
well i bought a new motherboard as an upgrade to my computer, that runs windows xp.
the motherboard is an ASUS M2N-SLI, and after the installation i tried to enter setup my usb keyboard would not work and so i turned off the computer, checked my cables, and turned it back on to see if this would solve my problem (with computers, you never know....) and it still didn't work. Then i turned off the computer once more, waited some time, then turned the computer back on.
However, this time, the computer screen did not come on, the dvd drives ran, the HDs were operating and even being used, the light indicating Hard Drive activity flashed, but the power light was unlit.
After Clearing the CMOS far too many times, and moving the cpu to my old motherboard to make sure it was not the motherboard i bought that was the issue. later i noticed i accidentally damaged my cpu and bought a new AMD 5000+ Black Edition. However, after replacement the problem persisted. I have checked with the on-board video for my previous MB and even that wont show even the BIOS. My video card's fan (xfx 8400 gs) runs as well, however, no screen. After trying both video card, and on-board video on two different, working LCD screens I have deducted that the only thing left is the power supply, a 450 W PSU. By the way, i use two DVD drives (one is SATA), two Hard drives (one is SATA), a sound card (Creative Sound Blaster Audigy), an xfx 8400 gs video card, and the ASUS M2N-SLI motherboard all hooked up correctly. The computer was working the same day I installed my new motherboard.
Im willing to hear any suggestions or thoughts as to what it is before i buy more than i need...

 

Please elaborate. Also, did you try to run this CPU on your ASUS board after trying it in your old machine?

Secondly, you may be pushing the envelope with that PSU. What is the make and model#.

Third, you will most likely need a PS2 keyboard and mouse to get into your BIOS unless USB enabled is the default or has already been set to legacy (not OS controlled) in the BIOS.

 

Yes I did and i had no change with a different cpu.
the psu information is XION XON-450X
annnnd, i borrowed the ps/2 keyboard from the family dell as well... and now it also will not work with the computer it was previously in. It bleeps fifty time (exageration) and says Keyboard error... possibly got fried...
Using the extra usb keyboard to use on it right now...
When i see it boot up once again i'll get another ps/2 keyboard.
Looking forward to the solution and working on my own computer once again!

 

Thank you.

 

can i have a suggestion of a particular Wattage and brand for a replacement PSU?
It's not fixed yet...
and for the previous CPU two pins were bent, and me trying to unbend them didn't help... >.<

 

Not being too familiar with a couple of the componets you listed, I did a little reading. For starters, although you didn't differentiate your board ( there are a couple of different ASUS M2N-SLI boards), your power supply (XION 450 ATX) is incompatable. You board has a 24 pin connector and a 4 pin 12V connector while your PSU only has a 20 pin connector and a 4 pin 12V connector. Additionally, this PSU only puts out 14 Amps and 16 Amps on the 12 volt rails (there are two). The actual rating of your PSU is 430W even though its called a 450 (450 is probably unsustained peak power).

Judging from your PSU and video card alone, it appears as if this is a budget minded build. Unfortunately, one usually gets what they pay for. I would probably break the bank with a specific PSU recommendation, however, I think you would be marginally safe to go with at least a 500 Watt PSU that puts out a minimum of 18-20 Amps on the 12V rail. Make sure you get something with both a 24 pin connector and a 4 pin 12V connector.

You will need to clear CMOS to get this to boot and I'll assume you are using the CMOS jumper to do this after disconnecting the power header from the board itself. I would also caution you to be using a high quality thermal paste and not a sticky pad on your CPU. I only mention this because you have indicated that this haetsink has been on and off a couple of different processors. It is imperative that the heatsink and CPU be cleaned and new thermal paste applied any time the heatsink is removed and I would recommend Artic Silver 3 or 5.

 

This site by a friend is very informative when it comes to power supplies.

http://www.10stripe.com/meta/nav/topics/power-supplies.php

The Big Power Supply Guide - Trusted Models

 

Sorry for not being exact with the motherboard... i thought there was only one... >.<
if you want more info on the exact motherboard this is the one i bought:
http://www.compusa.com/applications/SearchTools/item-details.asp?EdpNo=3584477&CatId=13
Thank you for all the help i shall look for a PSU within or above the range you have said should work ^^.
I'm gonna focus for a 600w most likely for any future changes that ill probably want... >.>
Yes, I want this computer to be with me for a long time ^^.
Thank you once again and hopefully i wont have to come back to this thread saying i still have a problem! ^^
...I shouldn't say that i'll jinx myself!!! >.<
well until next time, thank you and ill be back if i continue to have problems, thank you.

 

ive also noticed that many 24 pin psu have no p4 mb connectors... is this important for my choice of psu?

btw, i wouldn't mind paying more for not only OBVIOUS good-quality, but most likely quite future-proof. Also, tell me if this psu satisfies my requirements:
http://www.compusa.com/applications/SearchTools/item-details.asp?EdpNo=2929621&CatId=1483

 

Not fixed!!! >.<
STILL NOTHING!!!!
>.<
I bought a 600 w PSU:
http://www.compusa.com/applications/SearchTools/item-details.asp?EdpNo=2486983&CatId=1483
After installing it i still have no picture.
I also added the thermal gel like you suggested.
btw the box says it has a 4 pin, but it means that the 8-pin separates into 2 4 pins.

The power light still does not come on, all fans run, the keyboard does not have any lights, not even at start up.

I beg you, HELP!!! >.<
I NEED HELP!!!! DX

 

I'll have to research the pinout on what you reference as the 8 pin but note that this has no 12V 4 pin connector which is labled on the manufacturer's box as a P4 plug. Your board calls for a 4 pin 12V connector and a 24 pin connector as mentioned in my first post.

The other thing you will need to do once we've got some clarification on that 8 pin connector is to clear CMOS. With the machine off and unplugged, disconnect the 24 pin connector from the motherboard. Then move the 2 pin CMOS jumper from pins 1&2 and place it on pins 3&4. Wait about 10 seconds and place it back on 1&2 and then reconnect your 24 pin power connector to the mobo. Now you can power up tapping the delete key to enter and reset your BIOS.

Note: if you removed that heatsink a couple of times and never changed out the thermal paste or if you had a thermal pad and did this, you may have done permanent damage to the CPU or the board - it only takes once to fry it if the conditions are right.



edit: Page down to the 8 pin connector in this link and note the differences. If all of the yellow wires are on the clip side, you should be good to go.

 

i am going to replace the motherboard, i got a warranty on it, luckily... since i know how im not so lucky... >.>

then ill get back to you if it works or not... -__-
luck is never on my side...