I have a dell t5400 that will not boot up. I just got it a few months ago and it just stopped booting up. I ran the power supp

[ohijames1]

computer hardware, dell, booting issues, dell t5400,

 

[bambiboom]

ohijames1,

It appears your post went astray in some way. Can you repeat your comments? Please describe the system- components, OS and what were the circumstances the last time it ran successfully as well as the new situation. Are there any error code lights (1 > 4) appearing on the front panel ?

Have you consulted the manual? See>

http://www.dell.com/support/home/us/en/19/product-support/product/precision-t5400/manuals

Cheers,

BambiBoom

HP z420 (2014) > Xeon E5-1620 quad core @ 3.6 / 3.8GHz > 24GB ECC 1600 RAM > Quadro 4000 (2GB)> Samsung 840 SSD 250GB /Western Digital Black WD1003FZEX 1TB> M-Audio 192 sound card > AE3000 USB WiFi > HP 2711X, 27" 1920 X 1080 > Windows 7 Ultimate 64 >[Passmark system rating = 3923, 2D= 839 / 3D=2048]

Dell Precision T5400 (2008) > 2X Xeon X5460 quad core @3.16GHz > 16GB ECC 667> Quadro FX 4800 (1.5GB) > WD RE4 500GB / Seagate Barracuda 500GB > M-Audio 2496 Sound Card / Linksys 600N WiFi > Windows 7 Ultimate 64-bit >[Passmark system rating = 1859, CPU = 8528 / 2D= 512 / 3D=1097]

2D, 3D CAD, Image Processing, Rendering, Text > Architecture, industrial design, graphic design, written projects

 

[ohijames1]

My dell t5400 will not boot up. Dual Quad Core Xeon E5450, 14 GB ECC DDR2 RAM, 500GB HDD, DVD RW. WIndows 7.
I ran the power supply test. the power supply is working.
I have a solid yellow light on the motherboard.
The last time I used it. The system worked fine. I turned the system off changed relocated the system and now it will not come back up.
light 1,3,4 come up sometimes when I turn on the system. it stays on for about 4 seconds I hear a weird beep and then it goes off. now the system doesn't turn on at all

 

[bambiboom]

My dell t5400 will not boot up. Dual Quad Core Xeon E5450, 14 GB ECC DDR2 RAM, 500GB HDD, DVD RW. WIndows 7.
I ran the power supply test. the power supply is working.
I have a solid yellow light on the motherboard.
The last time I used it. The system worked fine. I turned the system off changed relocated the system and now it will not come back up.
light 1,3,4 come up sometimes when I turn on the system. it stays on for about 4 seconds I hear a weird beep and then it goes off. now the system doesn't turn on at all

ohijames1,

Sorry you're still having the troubles.

The brief appearance of lights 1,3,4 and a beep are the ordinary start up. I believe they turn off as soon as the video subsystem is started.

You might consider eliminating some of the simpler possibilities.

1. One key might be in that the system was moved. Remove the side panel and check all electrical connections to the motherboard and drives. Remove and replace the RAM and cards, making sure all are securely set. If your system has as access panel (=non tampering) switch on the access panel, work this switch and if you have a switch cleaner like DeOxit, clean the switch. Try a start and hold the switch fully in manually as these switches can fail. And watch each component to see that all fans and the HD (s) are running. If the front CPU's fan is not working there will be thermal shutdown within seconds of starting. I once tried starting a Precision 390 on which I had just changed the CPU, without the heatsink and there was no display and it shut down almost instantly.

2. Examine the motherboard for any cracks or signs of disturbance of the tracings or burnt components. These can be subtle, use a strong light and magnifying glass. The heatsinks are very heavy and I've read of examples in which Precisions were dropped, or had been carried long distances in vehicles, or through a carrier, or set down hard and the weight/momentum of the heatsinks affected the motherboard. Precisions are very rugged but it's something to eliminate as a cause of the trouble.

3. Try starting with only one RAM module, trying different ones. Pay attention to the anti=tamper switch if you're trying it with the access panel off.

4. If you have or can borrow a GPU, try starting with a different GPU. And, if you can , try the current GPU in another system.

5. If the HD's run but do not sound as though they have any activity and the HD activity light on the front panel does not light, replace the CMOS battery.

6. If you suspect all is not right with the HD's, remove and have them tested.

In all these tests, make careful notes of any lights displayed.

It's a difficult one because there's no display to see error messages, but perhaps eliminating some simple possibilities as the above will help isolate the problem.

If the above don't produce results and this is your main work system and you're out of business, you might consider ordering and replacing the motherboard sooner than later since that cost and time expenditure could be far less than the income you lose in diagnostics fussing. If you're methodical, they are not tremendously time consuming to change and tested motherboards are a $30-80 item on Ebahh. I've seen new, unused ones for $60-70. If you change motherboards, you may have to use phone activation for Windows as the previous activation for that serial number will have a different system number. When going through the phone activation and repeating the codes and so on when asked how many systems is that copy of Windows on, you simply answer "One" and it will be activated.

I apologize if this is all stuff you already know!

Let me know what happens.

Cheers,

BambiBoom