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Alienware area-51 7500 r4 powers up but will not post. LED on motherboard stays '--'.

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It could be your power supply, memory, cpu or the motherboard.
Disconnect all USB devices connected to your PC with the exception of the keyboard and mouse, also if you have any devices other than the video card, disconnect the as well.
Try and see if your pc will boot now.
Try booting into safe mode.
Do you hear any error beeps?
Test the display on another pc to make sure it is working propertly.
I hope this helps.
Good luck and have a pleasent day.

Posted on May 18, 2011

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Posted on Jan 02, 2017

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Where can I find a replacement R5TNT Aurora H2o cpu cooling system?


There is one E Bay site that has this cooler. Just do a web search; " Alienware Aurora R5TNT"

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Was on my PC it is a Alienware Area 51 older PC but has worked fine for what I need, anyway it was workin fine and I went to turn the tv and the motherboard said something failed, I removed the memory,...


Hello it sounds like the power supply is failing, or the graphic card.

Did you get any fault code on the screen ???
Blue screen of death ???

Try also to look here:

http://www.tomshardware.co.uk/forum/261145-13-perform-steps-posting-boot-video-problems

You are welcome to post back a comment.

Good luck

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Need the wiring diagram for the FP1 Header on LGA775 672M01-1.1-8EKSH DDR2 SATA Motherboard


http://www.ascendtech.us/foxconn-lga775-672m01-1-1-8eksh-ddr2_i_mb4672m0118eksh.aspx

Better photos,

http://www.ebay.com/itm/FOXCONN-LGA775-672M01-8EKSH-DDR2-SATA-PCIE-MOTHERBOARD-/250896116650


Go to the photo under the Specifications. Shows a Top view, and the Front Panel header. (FP1)

Note the colored areas on FP1 for the different contact pins.
The pins in the Red area should be for the Power On switch.
Suggest take an LED with two wires, and Briefly touch those two pins.

Power supply comes on touch the pins in the other colored areas.
1) LED light stays on? That's the two pins for the Power On LED.
2) LED light blinks? That's the two pins for the HarDDrive activity LED light.
3) Computer restarts? That's the two pins for the Restart switch.
(IF a Restart switch is used)

Regards,
joecoolvette

(Voltage used? 5 Volts DC
In comparison two D cell flashlight batteries store 3 Volts DC )

Oct 15, 2012 | Computers & Internet

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Need IBM motherboard 29R8260 front panel controls


John,

The front of your computer is the Front Panel.
The area of contact pins on the motherboard, that the main wires from the Front panel go to, is the Front Panel header.

What you need is a Front panel header pinout.

This I do not have. What I do have, is a simplistic method that may allow you to find out, what the pinout is.

http://www.ebay.com/itm/IBM-ThinkCentre-M51-29R8260-Socket-775-Motherboard-w-P4-3GHz-SL7PU-/390456414497?_trksid=p4340.m263&_trkparms=algo%3DSIC%26its%3DI%252BC%26itu%3DUCI%252BIA%252BUA%252BFICS%252BUFI%26otn%3D15%26pmod%3D260995444535%26ps%3D63%26clkid%3D1437936870868306373&_qi=RTM1062688

Looking at the Hardware Maintenance Manual for the ThinkCentre M51, (It also uses this mobo), the Front Panel header is to the right of the Ram Memory slots. (Processor to the left, Ram Memory slots at the Top)

Looking at the Ebay link, there are three views available. Click on the middle view. In the view photo the Front Panel header is the black rectangle below the Yellow ram memory slots.

Two rows of pins.
Power Supply plugged into power, use an LED light with two wires.
Go across the top row, and touch the first set of two pins next to each other.

No? Go on. Touch the next set of two pins. I'm willing to bet the third set of two pins is the Power On switch pins.
(Could be mistaken, however)

The contact made should be brief. The Power On switch is a Momentary Contact Switch.
Once the Power Supply comes on, wait a minute, then start testing the other pins.

LED light blinks? You have the HarDDrive activity LED pins.
LED light stays steady? You have the Power On LED pins.

Be aware however, that there may be 3 pins for the Power On LED.
Two Positive ( + ) pins, and one Negative ( - ) pin. This is for a dual color Power On LED. (Turbo mode/ Regular mode)
This would mean touching the first pin, or second pin, in the set of 3 pins, and the last pin in the set.

Computer restarts? You have the 2 pins for a Reset Switch.
(Do NOT touch the Power On switch pins again, or the computer may restart)

Not what I would like to state. Would like to state the exact pinout.
Perhaps if you get this figured out, you might take the time to post the pinout. Crude is fine, I can 'clean it up'. This way 100's to 1000's of people may be able to use your findings. Think how many people you would help.

Regards,
joecoolvette

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1 Answer

ALIENWARE DESKTOP LOST ALL POWER


In a laptop, you can lose power in three ways.
1. Dead battery 2. Dead Power cord. 3. Bad motherboard.
ther first two should be rather obvious, as the battery won't work or it won't hold a charge, but if it won't turn on at all, even while plugged in, chances are that you're going to need a new motheboard. This can be expensive in the M--x laptops, unfortunately.
Sorry for the bad news, mate.

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simple you windows installation cant find the hardware to finish booting up in other words its looking for the old system and cant find it yes you will have to reinstall windows you cannot take a hdd from one motherboard to another windows won't allow it

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The computer does not work I was told buy a tech person it would cast $500. to fix I said no way. what does it cost for a D900T motherboard. My computer is a look a like of Alienware computer laptop 17"...


Well he wasn't that far off.

Motherboard : $359
Labor: $160

Total = $519

Unfortunately, because laptop motherboards on fit in a very few select machines, their prices are much higher. And, since it is an Alienware, the price is higher still. In fact, the cheapest I found is what I quoted for you and it is a used one and I even discounted labor since replacing a laptop motherboard can take several hours, I only charged 2 hours max even though it is likely to take 3 - 4.

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Without more detailed information, I really can't help you decipher that code... Since you don't know which specific Foxconn motherboard you're working with, it might be best if you contact Alienware Customer Support for detailed information:

http://support.alienware.com/Support_Pages/Support_Area.aspx

Good luck; let us know what you learn...

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