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My PC computer does not boot, beep or display on the monitor. Extensive troubleshooting has either the motherboard, CPU or both bad. Without a schematic or diagram, how can I determine which one is bad? Trust me, I have ruled out all other possible suspects. Any help would be appreciated. --Richard

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  • RLJ5831 Jul 27, 2008

    Monitor is ok.

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Is there power on the on the power button of both cpu and monitor?
was there any upgrade for hardware or software recently?

Posted on Dec 16, 2009

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What about the monitor? is it properly connected? Is it installed. Monitors come with their own software.

Posted on Jul 26, 2008

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Acer x1300 Will Not Boot. Continuous Short Beeps, no pattern, just repetitive short beeps evenly spaced. No display on monitor. I have already replaced the motherboard with a spare.


check ram and other peripherals. If not those then the CPU may not be seated properly or you may have forgot to put thermal paste between the cpu and heatsync

hope this helps

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I am running Unix Tru64 5.0 on Compaq Alphastation XP1000. The computer does not boot and does not display anything and does not beep. The power supply works and some LEDs are on on the logic board and the...


Hi.first pull-out your motherboard in the CPU case then power on without memory only processor installed.if you hear continuous beeping your motherboard is working good.
try this beep code means.

No beep means short,no power,bad CPU,loose peripherals.
One beep means everything is normal running motherboard.
Two beep means CMOS error IC.
One long beep,one short beep means motherboard problem.
One long beep,two short beeps means video card problem.
Three long beeps means keyboard error.
Repeated long beeps means memory error.
Continuous hi-lo beeps means CPU overheating.

Hope can help you.

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I AM TROUBLESHOOTING AN EMACHINE MODEL W3410 AMD ATHLON THAT JUST CONTINUES A LONG REPEATING BEEP AT BOOT AND AM NOT RECIEVING SIGNAL TO MONITOR. IS IT MEMORY OR VIDEO . CAN'T GET A CLEAR TOPIC FOR THE...


Almost always indicative of a RAM memory problem. Troubleshoot by removing 1 stick of memory and rebooting. Switch sticks to determine if either stick of memory is bad or a bad bank on the motherboard.

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1 Answer

When booting the screen says no signal and the it begins beeping intermedately


I think the graphics card has become unseated as the PC does not need a monitor to start up so there would be no beeps; Here is a list of beep codes with there meanings.
BEEP CODE MEANING POSSIBLE CAUSE
1 Beep (No video) Memory refresh failure Bad memory
2 Beeps Memory parity error Bad memory
3 Beeps Base 64K mem failure Bad memory
4 Beeps Timer not operational Bad motherboard
5 Beeps Processor error Bad processor
6 Beeps 8042 Gate A20 failure Bad CPU or Motherboard
7 Beeps Processor exception Bad processor
8 Beeps Video memory error Bad video card or memory
9 Beeps ROM checksum error Bad BIOS
10 Beeps CMOS checksum error Bad motherboard
11 Beeps Cache memory bad Bad CPU or motherboard

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2 Answers

The desktop won't reboot. The power light stays yellow. I hear a fan running, but the monitor says no signal.


If your fan runs and the hard drive spins up, then you have a video card problem.
I'd do this: Disconnect everything inside the case but the CPU, memory, and video. Now try to boot. Also observe the fan on the CPU--does it spin?
If this fails, then your video has probably gone bad. Also--does your computer usually give you a "beep" when it starts up? If so, is it giving you a beep now? If not, you're failing the hardware startup test (POST).
So, your problem may be the video card. If your video is part of the motherboard, then you need to replace the motherboard.

Oct 01, 2009 | PC Desktops

2 Answers

Turn it on it beeps cdc


You really aren't giving much info, so here are some beep - codes, also make sure nothing came loose on the motherboard or other components ( do this ONLY if you know how ) Safety first.

BIOS Beep Sound core list

AWARD BIOS

1 short(Beep) System booting is normally.
2 short(Beep) CMOS setting error
1 long - 1 short(Beep) DRAM ERROR
1 long - 2 short(Beep) Display card or monitor connected error
1 long - 3 short(Beep) Keyboard Error
1 long - 9 short(Beep) ROM Error
Long(Beep) continuous DRAM hasn't inset correctly.
Short(Beep) continuous POWER supply has problem.

AMI BIOS

1 short(Beep) DRAM Flash Error
2 short(Beep) DRAM ECC Check Error
3 short(Beep) DRAM Detect Fail
5 short(Beep) CPU Error
6 short(Beep) Keyboard Error
8 short(Beep) Display card memory Error
9 short(Beep) ROM Error
1 long - 3 short(Beep) DRAM Damage
1 long - 8 short(Beep) Display card or monitor connected error

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2 Answers

When the computer boots up the fans start but i can't get a signal on the monitor and the computer does not beep


- You need to reseat all of your hardware inside the system like hard drive power and data cable,as well as the dvd drive cable, reseat also the video card and power supply cables. Make sure that you will tigthen the video cable screws. after this step- turn the system on.

-If the monitor does not response from anything, try using different monitor so we copuld isolate the issue.

Oct 08, 2008 | PC Desktops

2 Answers

Acer computer red light


Reasons could be:
1. BIOS battery is dead.
2. RAM chip has loosen up in the slot.

Open the CPU, and look for BIOS cell (it would look like a quarter coin). Try replacing that. Also check for RAM; take it out clean it with a dry cloth, blow the slot with dry air to take out dust particles and place it firmly back into the slot.

Hope this would kick start your PC again.
.

Jul 18, 2008 | PC Desktops

1 Answer

Emachine w2686 no display when boot up


Couple things to check. First, check with different monitor. Their monitors are usually build by KDS and I think there was a bad series out there. Also check for any beep codes through speakers on startup, this can tell you bad ram or bad video out. Also try unplugging computer and removing CMOS battery inside (watch like battery). Lastly, If non of the above, a bad processor will allow the computer to come on but no beep, no boot, no nothing but fans and green power light. Hope this helps a little.....

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3 Answers

Asus P4S800-MX Motherboard video problem


The system speaker is usually a set of four pins and you use the outside pair to connect the speaker. You may need to go to the Asus web site to download the manual if you don't have it. Try to reset the bios either by shorting the appropriate pins or by removing the battery for a while.

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