Question about PC Desktops

5 Answers

I have quite a lot of experience building PCs. Have just installed Asus P5E3 MoBo Core2 Duo E8400 CPU 2MB OCZ DDR3-1333 memory. It will not power up properly. All fans spin up briefly and HDD LCD flashes once, then it goes down again. This then repeats every 5 seconds ad-infinitum. Same symptoms in a different case/power supply/HDDs/graphics card, even with memory removed. Cannot even get into BIOS. Any ideas - MoBo, CPU? Pete how

Posted by on

  • 1 more comment 
  • zelazny Apr 24, 2008

    This is all brand new kit, and I see the E8400 CPU has been supported since Jan.2008, so thought the BIOS may be OK. Various forum posts suggest that the BIOS should run and report any unsupported CPU - but not in my case. I will investigate whether any Asus BIOS Utility I have will work, but do wonder whether I can get anything to run at all. I have downloaded the latest BIOS 0904, which comes with their AFUDOS utility, and see what happens.

  • zelazny Apr 25, 2008

    My gut feeling was for a MoBo fault. I logged a call with Asus Support, and they asked me to start with just the CPU and power up and listen for the bleeps, then add memory and then graphics card. Initially however, just clearing the CMOS solved the powering up/down cycle - all fans and disks spun up fully and the front power LED came on, but NO display.With CPU alone, I got the bleeps for no memory. After adding just the memory there were no bleeps to indicate the lack of graphics card. Adding two different graphics cards did not get anything on the display. I have relayed this back to Asus suggesting the MoBo still has a problem.

    Thanks to ALL who have made suggestions - very helpful! I'll keep this open until Asus reply again.

  • zelazny Apr 28, 2008

    Asus confirm that it is likely to be a MoBo fault, and it is being returned for replacement. Thanks to all contributers.

×

5 Answers

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Genius:

    An expert who has answered 1,000 questions.

  • Master
  • 1,447 Answers

If your computer does not display such a prompt, consult your owner's manual or contact the manufacturer for instructions. Your computer manufacturer may have selected a different keystroke sequence; the following sequences are commonly used:
Ctrl+Alt+S
Ctrl+Alt+Esc
Ctrl+Alt+Ins
Note: If you press the keys too early, the BIOS may display an error message.

Posted on Apr 24, 2008

  • Edgar Allan Pagayona
    Edgar Allan Pagayona Apr 24, 2008

    You will need to consider these issues:

    Voltage --The CPU voltage is selected with motherboard jumpers.

    Clock
    Rate -- the clock rate written on a CPU refers to the maximum rate
    recommended by the CPU manufacturer. The CPU does not necessarily run
    at that rate. A CPU will run slower than its maximum rating if the
    motherboard's clock input frequency is too slow. Some CPUs can protect
    themselves from too high a voltage or too fast a clock rate by slowing
    down. Others cannot do this and may burn up after too long an exposure,
    even if there is active CPU cooling element, such as a fan. Motherboard
    jumpers specify the clock rate that is fed into the CPU.
    Note on P
    Rating -- some CPU manufacturers rate their products with a P rating. A
    P200 rating does not necessarily indicate that the CPU is running at
    200 MHz; it is only a measurement of expected throughput compared to
    other CPUs. Contact the CPU manufacturer for an explanation of this
    feature.

    CPU Socket -- not all CPUs use the same size and shape socket.

    BIOS
    Support -- your BIOS may not support the type and speed of the new CPU.
    If you cannot get confirmation (and upgrade instructions) from the
    motherboard manufacturer about the CPU upgrade, then it is not
    advisable to change the CPU. Because BIOS is customized for individual
    systems, only your manufacturer can tell you for certain whether the
    CPU you are considering is supported or not, and if it has been tested.

×

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Expert
  • 563 Answers

Hi zelazny

First try the Asus support , I would personally think it would be the Motherboard if the PC doesn't even want to start up in another box - like you mentioned. Highly unlikely the CPU !

Posted on Apr 24, 2008

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • PC Desktops Master
  • 19,396 Answers

It is overheating or faulty cpu, check that the fan is well in contact with cpu, try a replacement fan

Posted on Apr 24, 2008

  • 1 more comment 
  • Ginko
    Ginko Apr 24, 2008

    Always test MB with a minimal set of devices connected. RAM, PSU, CPU and FAN, and only power on switch connected. See if it starts. Ensure the fan you are using is enough for your CPU.

  • Ginko
    Ginko Apr 24, 2008

    Once you exclude all other causes, (see above) remains only fauty MB or CPU

  • Ginko
    Ginko Apr 24, 2008

    Ensure also that you are connecting PSU properly, New psu have more than one connector (CPU power) refer to MB manual for PSU connection

×

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • PC Desktops Master
  • 13,433 Answers

I would recommend you get your hands to a 4digit post card

http://www.pc-diagnostics.com/pc_diagnostics_tools/flippost_isa_pci_bus.shtml

Cpu, memory or motherboard

There are also cheaper 2digit models available not so accurate but they work too.

Posted on Apr 24, 2008

×

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Genius:

    An expert who has answered 1,000 questions.

  • Master
  • 3,587 Answers

That's the issue..BIOS access...you may need to flash the BIOS...adding all those components, can make the system 'loop' causing that cycling issue...you have a BIOS configuration utility?

Posted on Apr 24, 2008

  • Patrick Michaels
    Patrick Michaels Apr 24, 2008

    One other thing..make certain that your housekeeping voltage monitoring chips are configured correctly...I never assume anything on mobo's out of the box anymore..

  • Patrick Michaels
    Patrick Michaels Apr 24, 2008

    Nods and winks to see Ekse and Ginko up and about mid day, eh fellas?

×

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Why can't I located Windows 7 Professional is my computer came with it?


Hi

Word and Excel come with Microsoft Office ,not with windows 7 ,Windows 7 is pre-installed operating system ,on the other hand Microsoft Office is optional .in most cases you only get 60 day trial version and may have expired

Jun 16, 2014 | Dell Optiplex 745 Desktop Computer, Fast...

1 Answer

I have dell 960 switch it on but light turns to orange


Could be several things.

1. could be the power supply
2. inspect the motherboard for bad caps.

If the above is OK. Try removing and reseating the CPU, Memory and CMOS battery.

Apr 15, 2014 | Dell OPTIPLEX 960 MT Desktop Computer...

1 Answer

Dell optiplex 745 window stuck mouse cannot function


I see this was posted over a year ago ,was this resolved?

Mar 27, 2013 | Dell Optiplex 745 Desktop Computer, Fast...

1 Answer

CARD READER WILL NOT READ


Most likely a problem with the card. They tend to corrupt easy enough. Try formatting the card.

Oct 28, 2012 | Dell Optiplex 745 Desktop Computer, Fast...

1 Answer

I need sound drivers


With your Dell computer's "Tag" number, visit their support website and enter that number to bring up your machine; from there you should be able to find/download your drivers.

Jan 05, 2012 | Dell Optiplex 745 Desktop Computer, Fast...

2 Answers

Acer Aspire E360, Need new Motherboard, cpu and powersupply


If you're going to replace the Mobo, Processor, and PSU, you may as well as replace the computer case, also.

Another $50 USD will buy you a decent computer case.

(Seen this? http://www.directron.com/cs888uvbl.html )

You can reuse your optical drive/s.

Mobo? Are you going to stick with AMD processors like what is used in your computer now, or are you going to go Intel?

AMD hardware is cheaper price wise, but not quality wise. Myself I prefer Intel.
Just a personal preference.

Dual core processor with DDR Sdram ram memory?
You're not going to like this answer, but this = No, for Intel processors.
DDR2 Sdram for dual core processors.

There are some older AMD processor based motherboards that do utilize DDR Sdram, and dual core processors.

It is IMHO this is going backwards.
Why?
Because using DDR Sdram will cause a 'bottleneck' of information. The dual core processor will be bottlenecked, by the slower DDR Sdram ram memory.

Also, I would imagine you would like to be able to buy a dual core processor now, and be able to use a Quad Core processor in the future, on that same motherboard.

Again, I'm more towards Intel than AMD, so forgive me if I'm talking to an AMD man.

I go for the 'Best Bang for the Buck' theory.
More performance for lesser money spent.

It is for the above reasons that I would recommend an XFX nForce 750i SLI Extreme mobo.
Why?

1) Supports Intel Pentium 4 processors, (With an 800MHz FSB, and fit into an LGA 775 processor socket), all the way up to an Intel Core2 Quad.

(Supports Intel - Pentium 4, Pentium D, Pentium Extreme Edition, Core2 Duo, Core2 Quad, and Core2 Extreme processors)

Supports Intel processors utilizing the 45nm architecture, and up to a 1333MHz FSB. (800MHz, 1066MHz, or 1333MHz)

2) Supports DDR2 Sdram at either 800MHz, or 1066MHz. (PC2-6400 and PC2-8500 respectively)

4GB's with a 32bit operating system, 8GB's with a 64bit O/S.

(A 32bit operating system has it's limitations. Only 3.2 to 3.5GB's, will be recognized of that 4GB's of ram memory)

3) Has Two PCI-Express x16 graphics slots, that use the PCI Express 2.0 technology. You can install two graphics cards, that utilize the SLI technology. (Scalable Link Interface)

With this motherboard, when you use two graphics cards, BOTH will operate at 16X.
Not 16X for one, and 8X for the other, like some motherboards.
(Things they don't tell you)

(Information about the Nvidia nForce 750i chipset, from Nvidia.com,

http://www.nvidia.com/object/product_nforce_750i_sli_us.html

Click on the Specifications tab)

Has 4 SATA headers on the motherboard, that utilize the SATA 3.0Gigabit per Second technology. (3.0Gb/s)

4) The MOSFET has a heatsink on it, as well as the Northbridge chip, and Southbridge chip. Plus there is a heatpipe in-between these heatsinks.
Helps keep everything nice, and cool!

5) Price is $70

2GB's of decent DDR2 Sdram at 800MHz, (PC2-6400), will set you back about $50.

You can buy a Motherboard/CPU combo with the Intel Core2 Duo E7500, for $190 USD.

(Intel Core2 Duo E7500:

Two processor cores operating at 2.93GHz Each.
3MB's of L2 cache.
1066MHz FSB
Based on the Wolfdale Core.

For the power supply, I would recommend an OCZ StealthXStream 600 Watt.
Why?

Because if you keep the temperature of this PSU at 118 degrees Fahrenheit, (47.9 degrees Celsius), it can reliably put out 728.8 Watts.

(Remember, 80 percent of the rated maximum wattage, is the figure you should go by.
80 percent of the rated maximum wattage, when the PSU is operating at a 100 percent load)

Has Four 12 Volts power rails. EACH 12 Volt rail is capable of handling 18 Amps.
Total is 72 AMP's!

Has all the power cables you will need.
Has a 120mm fan.
A larger fan means it will turn slower, and still produce more air flow.
Also will make less noise. (Unless you are running an intense game at high settings. You won't hear it anyway, because of the game!)

Just my thoughts. If this is not what you had in mind, please state so in a comment.

(Additional comment. I think utilizing two graphics cards in an SLI configuration, is redundant. Basing this statement on price versus performance.

Again with the 'Best Bang for the Buck, theory, but I would recommend an EVGA Geforce GTX 260 Core 216 graphics card.

Graphics performance is VERY close to an Nvidia Geforce GTX 280, but at way less cost)

Jan 30, 2010 | Acer Aspire E360 PC Desktop

1 Answer

I have a gateway 831gm. it has an Intel (Augsburg) 915G Motherboard and a Pentium 4 630 cpu 800MHz fsb & 2MB L2 cache. i've been looking for a cpu upgrade and saw that the Pentium E5200 Dual Core has...


If both motherboards are LGA775 socket, then the next concern is whether or not the case is capable of having the new motherboard installed into it. Disconnect all power cables to all dv drives or cd drives and hard drives. Disconnect all ribbons from drives to the mother board. If you can get to all of the screws that hold the motherboard into the case, you get away without removing drives. Once you've got the motherboard then you can disconnect the power cable from the motherboard. Remove the memory chips, disconnect the sound cable from the old motherboard. install the memory chips onto the new mobo, Connect the power cable to the new mobo, then install the new mobo into the case. Replace the ribbons from the drives to the mobo, replace the power cables to the drives and reinstall the sound cable to the cd or dv drive. You should be done now.

Dec 13, 2009 | Gateway 831GM PC Desktop

1 Answer

I can't get any sound out of the computer. I have the speakers set up an plugged in, but no sound.


Drivers ... drivers .... also remove it from the device manager and let windows find it after you install correct drivers

Oct 13, 2009 | Dell Inspiron 530 Desktop Computer...

Not finding what you are looking for?
PC Desktops Logo

Related Topics:

76 people viewed this question

Ask a Question

Usually answered in minutes!

Top PC Desktops Experts

joecoolvette
joecoolvette

Level 3 Expert

5660 Answers

Brian Sullivan
Brian Sullivan

Level 3 Expert

27725 Answers

Les Dickinson
Les Dickinson

Level 3 Expert

18297 Answers

Are you a PC Desktop Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...