Start up problem. Screen flashes on for less than a second.

December 23, 2011 at 04:38:24
Specs: Windows 7 Ultimate, 2.403 GHz / 3071 MB

The PC boots up but does not display. Boot up screens appear momentarily then remains black. Possible to shut down PC normally using (unseen) keystrokes. Repeated attempts will finally boot successfully. Created Windows repair disc that seems to help but not every time. Tried new graphics card but same result.

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December 23, 2011 at 06:06:08

Do you see the BIOS post screen ? Or can you boot into BIOS and see the BIOS configuration pages ?

If no, this seems to be a hardware issue rather than software. When you press the power button, do the fans start rotating and hard disk making noise ?

If this is a desktop, then remove the side cover and start checking with the electrical connections. Also check if there is a missing connection, such as the one to the video card.


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December 23, 2011 at 12:31:31

Thanks for reply. The BIOS post screen flashes on for about a quarter of a second (or just long enough to recognise what it is). The same happens prior to that when the purple "Packard Bell" logo screen appears, similarly with the "Starting Windows" screen before finally going black. The PC is clearly booting up. The fans start, the DVD drive spins, the hard disk red light indicator flashes away merrily and I can hear the hard disk spinning. I can access its local printer from a networked PC. I can also shut down the PC using undisplayed key strokes (Enter/Windows key/Right arrow/Enter).
The fault was happening with its onboard graphics adaptor. I fitted a new graphics card in the PCI Express slot yesterday and the same fault is happening in exactly the same way.
Sometimes the PC boots up completely normally and is fully usable and on those occasions I can get into BIOS when it is booting.
Intermittent faults are truly annoying!

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December 23, 2011 at 23:25:41

Could be a stick of RAM problem. Can you remove all RAM sticks and try to boot ? You will hear error beeps. Then start inserting one RAM stick and try to boot. If the PC boots and runs fine for some time. Then add another stick and so on.

If you still have the same problem after checking the RAM sticks, then your problem may be in the motherboard: The onboard video chip is faulty. After you added the separate video card, your motherboard should switch to it automatically but can't.


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Related Solutions

December 24, 2011 at 00:35:06

after testing ram, can u try the video card on another computer? and what is the video card?
since the windows boots up then it should be fine but video card driver cant display the image.
if u can go to bios and disable the onboard graphics manually, then reinsert ur graphics card and reinstall its driver

computers are a second home

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December 27, 2011 at 02:31:36

Hi suatcini,
Tried removing and sequentially replacing the RAM but it made no difference. I noticed that just by turning the monitor off and on again it briefly displayed the desktop, indicating that it may well be the monitor itself that was faulty.
I swapped it to another PC and the fault continued. It is the monitor which is faulty, not the PC !
I then noticed that the D-Sub plug was not fully home in the back of the monitor. I reseated it and the display fires up every time. I'm still testing it now but I'm fairly sure that was the problem. Why it should work perfectly for 6 years and then happen I do not know.
Thanks for your help.

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December 27, 2011 at 03:02:56

Nice to hear you sorted out your problem. There should be two bolts securing the cable plug to the connector on the monitor, if that is what you mean by the word "plug".

I am sorry I have caused you a lot of work to do, removing-refitting RAM sticks.

Happy new year.


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