Monitor flashing after electricity went off

September 10, 2010 at 16:20:08
Specs: Windows xp home
I was working on my pc when the electricity went off. when it came on again i restarted the pc but the monitor keeps flashing on & off. this happens more when i attemp to do some operation on the pc.

i cannot check the system cos the monitor wont stay on long enough! i have tried to reboot the pc with disc to put new os on but it wont boot. I cannot seem to change the bios boot order...... it was set to boot from cd anyway.

i have tried the monitor on another pc & it seemed to check out ok. so im asuming its the pc.
i know some basics but im not a proper tec ! any help would be appreciated for this please !

i did put some ddr 1 in the pc but have discovered that this was a different bus speed. would two ddrs running at different speeds do this ? i have been told that all this would do is they would just run at the lower speed.

I did take the new ddr out but it didnt seem to make much difference.

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September 10, 2010 at 22:58:13
Boot into safe mode, go to Device Manager, click the + on Monitors, then right click on the monitor listed & click on > Uninstall.



How to start Windows XP in Safe mode
To use a Safe Boot option, follow these steps:
1. Restart your computer and start pressing the F8 key on your keyboard. On a computer that is configured for booting to multiple operating systems, you can press the F8 key when the Boot Menu appears.
2. Select an option when the Windows Advanced Options menu appears, and then press ENTER.
3. When the Boot menu appears again, and the words "Safe Mode" appear in blue at the bottom, select the installation that you want to start, and then press ENTER.

Device Manager > XP

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September 11, 2010 at 07:38:29
hi thanks for that. ive tried that now but no joy. ive also tried a fresh install (yep managed to get that back on) but to no avail. the monitor just keeps flashin on & off even when booting up. have reinstalled drivers etc but still no joy.

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September 11, 2010 at 17:43:55
1: Wriggle the monitor cable at the back of the comp, connection must be tight. Start at the comp end & work you way along the cable, you may have a fault in the cable. Back end of comp must not be jammed hard against the wall.

2: Try a spare video card, borrow if you have to, for testing purposes.

Installing a Video Card

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September 15, 2010 at 01:11:38
hi, thanks for that. i have managed to get hold of an old moniter (very old lol ) this works fine on the pc.
so, at least it seems to be the moniter thats faulty. why it checked out ok before i dont really know.
i am really greatful for all the help ! thanks so much.

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September 15, 2010 at 05:10:17
Nice work astraspirit

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September 16, 2010 at 13:03:37
Hi John, just to let you know. It was the monoter. but cable is integral so cannot do much about that ..... moral of this lesson to all others is get a surge control socket hehe. well lesson learned. !

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