beep sound isn't coming when turn on compute

August 27, 2011 at 00:46:12
Specs: Windows xp, Intel CPU
beep sound isn't coming when I turn on my computer but Processor ok, ram ok, and hard disk also ok but nothings appears on the screen

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#1
August 27, 2011 at 01:08:31
If you are not getting a bios beep when you startup how have you determined that any of the CPU,RAM and drive are not faulty? Your powersupply may even have developed a partial fault. Nothing you have said so far eliminates any possibilities.

Goin' Fishin' (Some day)


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#2
August 27, 2011 at 01:30:18
Thanks for your response sir, in this case has came up suddenly on one day when I turn on my computer I sow the beep sound is not coming and nothings appears on the screen then I check hardware devices the Processor fan is working, MB lights on also hard disk working then I thought this fault came up because VGA problem and also it's have a on board VGA so then I change and add new PCI express VGA card but nothings change same thing happened again and again, how can I solve this can you help me

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#3
August 27, 2011 at 02:03:04
Spinning fans and drives are no guarantee your powersupply has not failed. The powersupply provides generally three different voltages and it is quite common for one of those voltage rails to fail while others continue to work. Testing your system with another known good powersupply of same or higher rating is your starting point. In order to conduct the test disconnect all power & data cables from optic & hard drives. Take out the graphics card you inserted as it is unlikely the onboard graphics failed.
Take out any other plug-in PCI cards and all but one stick of RAM. Leave only the CPU with fan, 1 stick of ram, Keyboard and monitor ( connected to the onboard graphics port)
If you still cannot boot with a known good powersupply then the next test would be to remove all the RAM and see if you can get a BIOS beep error code.

If you get no error beeps with the ram removed then you have either a CPU or motherboard failure. The fact your CPU fan spins means nothing. It will spin whether or not the CPU is good.

Goin' Fishin' (Some day)


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#4
August 27, 2011 at 06:46:17
Richard59 is exactly right. The 3 main possibilities are the CPU, motherboard, or power supply. A graphics or RAM problem would cause beeping - you have no beeps, so there's no point messing with the graphics. However, as stated, try taking out ALL the RAM, then power up the system - it should beep constantly with no RAM installed. No beeps = bad CPU or bad board or bad power supply. My money's on the power supply.

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