Solved Does my pc have an output problem?

March 6, 2012 at 02:38:19
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My router lan light is on when my tower is off but it goes out when i turn the tower on. The moniter says no signal but works with my laptop. The mouse and keyboard wont work but, again, work with my laptop. When the tower is powered on the fan is spinning. I put a new larger hard drive in last week and wondered if that could cause the problem. The tower is about 4-5 years old but has worked fine. Could it be an output problem?

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✔ Best Answer
March 6, 2012 at 06:35:39
As I said, it has nothing to do with the OS or hard drive. If the system is functioning normally, there should be a single "everything is OK" beep at startup. A series of beeps indicates a problem which can usually be determined based on the beep code. No beeps at all usually indicates a major hardware failure.

I suggest you unplug the power cord, open the case, disconnect ALL the drives (floppy, optical, HDD) & unplug all external devices except for the monitor & keyboard. Then plug the power back in & see if the system will boot. If it still doesn't boot & there are no beeps, shutdown, remove ALL the RAM, then try booting again. A normal system will beep like mad if no RAM is installed. If there are still no beeps, your problem is probably with one of the "big 3" - motherboard, CPU, or power supply.



#1
March 6, 2012 at 03:24:13
Did you reinstall the operating system & all the drivers after you installed the new hard drive? It sounds like you didn't.

How do you know when a politician is lying? His mouth is moving.


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#2
March 6, 2012 at 05:03:08
"The moniter says no signal"

You do not need a hard drive to boot up a system, the BIOS loads before the OS so if you're not seeing the BIOS POST screen, the video card isn't sending a display signal to the monitor. That could mean your video card is bad or the motherboard or the CPU or the power supply. In other words, you have some troubleshooting to do. Do you hear any beeps when you attempt to boot the system?


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#3
March 6, 2012 at 05:47:49
I reinstalled the operating system and drivers after i got the new hard drive. There are no beeps when i turn it on and to power down i have to hold the power button in for about 10 seconds which i didnt have to before.

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#4
March 6, 2012 at 06:35:39
✔ Best Answer
As I said, it has nothing to do with the OS or hard drive. If the system is functioning normally, there should be a single "everything is OK" beep at startup. A series of beeps indicates a problem which can usually be determined based on the beep code. No beeps at all usually indicates a major hardware failure.

I suggest you unplug the power cord, open the case, disconnect ALL the drives (floppy, optical, HDD) & unplug all external devices except for the monitor & keyboard. Then plug the power back in & see if the system will boot. If it still doesn't boot & there are no beeps, shutdown, remove ALL the RAM, then try booting again. A normal system will beep like mad if no RAM is installed. If there are still no beeps, your problem is probably with one of the "big 3" - motherboard, CPU, or power supply.


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#5
March 7, 2012 at 02:46:31
Did all that and it looks like the motherbourd and power supply.

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#6
March 7, 2012 at 04:58:55
"Did all that and it looks like the motherbourd and power supply"

How do you know which? And how did you rule out the CPU?


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