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Pc has power but doesn't display screen

June 1, 2009 at 12:07:32
Specs: Windows XP

we had a couple of power cuts the other day now the PC wont display on the montior and wont turn off via the button have to turn off by switch. it doesnt supply power to USB's either plays no beeps at startup but the cpu fan and fans cdrom all show they are working. any ideas, ive tried a new PSU new monitor both onboard and external graphics cards, any help ta

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#1
June 1, 2009 at 12:44:27

Then keep going farther. Take everything out and try to get a beep code. Could put in the minimum to boot to known good display. You should also reset bios maybe.

"Best Practices", Event viewer, host file, perfmon, antivirus, anti-spyware, Live CD's, backups, are in my top 10


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#2
June 1, 2009 at 12:53:24

im not sure how you reset the bios can youe xplain to me please mate

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#3
June 1, 2009 at 13:02:29

Does it supply power to the monitor ( I mean if the monitor led
is orange sleep mode, does it go to green when started).?
- IF it does then the monitor is not able to pick the signal
from the CPU( either the monitor is bad or your VGA port is
bad).
- If it does not then try to connect your monitor to any other
computer you have( this way you can make sure your monitor
is ok).
- One last thing you can do is check the SMPS if it is able to
supply the power to all the components.
- Regarding how to reset the bios, there is a bios battery on
your mother board just next to it you will have three pins you
with a small connector on it( jumper) you will have to
interchange the jumpers position and start the computer. this
way it will reset the BIOS , make sure you put the jumper
back to the original position once it is done.

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#4
June 2, 2009 at 23:33:15

ok ive reset the BIOS still nothing came up, the monitor goes in to sleep mode when u start up,
tried removing both the video card and netword card so its literally bog standard and still nothing, still no power to USB devices and black screen anyone else got ideas

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