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Monitor sometimes not recognised by bios

id_wright

id_wright

id_wright

Associate
Joined
29 Nov 2004
Posts
64
Hi there,
Not sure if this should be in this forum or under monitors, so apologies if in the wrong place.
Had an issue with bios sometimes not recognising my monitor (24" flat panel connected by DVI) ever since I put my computer together last summer. Happens maybe 5% of the time, and a reboot fixes it, haven't really had time up to now to investigate further.
Also happens when using an older screen connected by VGA.
Any ideas?
Many thanks,
Ian
 
You mean on a cold boot the screen doe'snt come on? It's nothing to do with the bios detecting the screen either anyway.
 
you say a reboot fixes the issue, you mean it does it while your on the pc playing games, browsing the web etc? or when you come to turn the computer on the monitor stays off?

more like a hard ware error, the system self test encountered a problem.
 
Sorry, wasn't very clear. Happens about 5% of the time when cold-booting, restarting or waking from hibernation (basically anytime the initial Abit screen normally shows during POST). If the screen displays the Abit POST image, it then goes on to boot normally. If the screen remains blank, the monitor power light flashes (as it does when the screen isn't receiving a signal), I press reset and then it normally works fine.
Hope that makes a bit more sense.
If it is a hardware error as mentioned above, is that likely to be in the graphics card?
 
Sounds like a cold boot issue with the board to me, do you have a system speaker connected or a LED post status on the board it's self?
 
Have a system speaker, no beep when the screen doesn't work and single beep when it does (I think). This only started occurring after I switched graphics cards last summer though, so unless I did some damage swapping components around...
Many thanks for the replies.
 
what psu you have? make sure there is no dust in the pci-e lane and ram slots. check all connections.
1 beeps mean system is fully operational
 
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