Computer will not boot

September 8, 2009 at 08:54:36
Specs: Windows Vista Ultimate 64 on a 32 bit processor.
This morning I was surfing the web and my computer shut down on me. I rebooted it and got to my desktop when it shut off again. And, by shut off, I mean it was just blink, gone. So I try rebooting again, hoping it was just a fluke, and the computer could not make it to the POST screen. I have tried resetting the CMOS memory, but to no avail, and I have reached the extent of my knowledge and patience with it so I come to you fine people here to help me.

<edit> I should mention that everything seems to power up fine, all the fans spinning and I can hear the HD's humming. I also took a look at the memory sticks, took them out, made sure they were clean and reseated them. I have had troubles with the BIOS as of late. About a week ago, I had rebooted my system to find that it was trying to boot to CD, when I set it to boot from hard drive. I rebooted and went into the BIOS, and saw that FLOPPY was the first in the boot sequence followed by Hard Disks then CD-ROM. I looked at the drives and my SATA drive (with my OS) was not listed. I made Hard Disks the first option and then rebooted, and it found the drive no-problem.</edit>


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#1
September 8, 2009 at 10:39:52
Shutting down is usually caused by overheating. If it's a desktop, make sure the CPU fan is running.

If it's a laptop, it might need a cleaning:
http://www.informationweek.com/stor...


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#2
September 8, 2009 at 11:30:53
CPU Fan powers on fine, and there is very little dust, so I don't think it has to do with overheating. Any other reasons why it would not be able to get to the POST screen.

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#3
September 8, 2009 at 12:05:08
"Any other reasons why it would not be able to get to the POST screen"

A Power supply problem is the 'most likely' (but not only) thing that would cause no initial beep and no display. It could also cause intermittent powering off. Don't assume that the power supply is ok because you see some signs of power.

But a motherboard problem, or a defective unit connected to the motherboard can also cause that problem.


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Related Solutions

#4
September 8, 2009 at 12:21:43
I just checked the power supply and was surprised. I unplugged most of the components, and only plugged the PSU into the HD and the motherboard. I powered on the computer and was rewarded with a high pitch squeal from my PSU. Thanks for the advice, looks like I know what I'm going to need. I'll try using a PSU from another comp to test it out make sure that was the only problem though, and I'll make sure to post with results.

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#5
September 8, 2009 at 16:13:36
I tried a new power supply but no dice, system would still not show anything other than a black screen.

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#6
September 8, 2009 at 16:37:17
To further troubleshoot, you can disconnect everything (except the front panel wires) from the motherboard, including the cards and RAM. If the motherboard/CPU is ok, you should get some error beeps because of the missing RAM.

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#7
September 8, 2009 at 17:41:46
I am unfortunate enough to own both a motherboard with no onboard speaker and a case with no build in speaker. So, I'm not sure what I should do.

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#8
September 8, 2009 at 18:02:47
That makes it kinda tough. I guess that I would disconnect everything from the motherboard except the RAM and graphics card/monitor and see what happens.

The only other thing that I can think of, is taking it to a shop for a test.


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#9
September 8, 2009 at 21:19:55
hi,
first change CMOS battery, then if your MB have inbuilt vga then remove graphic card boot from on board vga+ ram you shoul be getting the display,if not take your MB out then try

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#10
September 10, 2009 at 08:00:00
Sorry 'bout the delay, been preoccupied. I tried to boot using only the RAM and the motherboard, connecting my monitor to the onboard graphics port, but to no avail. The monitor received no display signal from the board, not even a blank screen.

<edit> I am figuring now that either the board or the processor died, which strikes me as strange since I hadn't done anything other than my normal amount of work with it. Any idea how either could just kick the bucket like that? </edit>


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