Sometimes monitor light blinks but screen shows nothing.this system boots sometimes and sometimes it stops in the middle of installation of fedora7 or suse10.3 just like when pc hangs and after that monitor doesnt anything but red light on the tower keeps blinking,i checked my mobo from service center and they told there is no problem with it,i got my RAM replaced.Is there a problem with my graphics cardor power supply
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Re: system is not workin properly
You might try this. Shut down the computer, disconnect power cords, disconnect everything at the back of the computer, mouse, key board, etc. Open the case, ground yourself by touching an unpainted area of the case and remove the power connectors to ALL optic drives and floppy drive if you have one. (Of course do not disconnect the hdd.)
Reconnect mouse, keyboard, etc., and power cords to wall outlet.
See if it will post now. If it does I say you have a faulty power supply.
I was given a computer which was doa. It would not post, after I tried the above routine it posted then booted to windows.
I replaced the psu and now the computer works fine.
Hope this helps!
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Will the monitor go into it's own config screen ? If not, it could be defective. You said it displayed a white screen so it is not likely that the brightness control is turned way down.
Check that the monitor is connected correctly to the system. Try another monitor that is known to be good. Does the monitor work on another system, say a laptop or another desktop?
Windows will boot up without a monitor and if you are running any servers on it, you can try to connect over your LAN. If the computer takes it's IP address from a local router, you can check the router status screens to see if the address is in use. That would prove Windows is running and that the monitor could be the problem.
Used monitors are not expensive these days so they are easy to replace. You should have multiple monitors anyway. This is the 21st century, not the twentieth when screen size revealed your pay grade in the organization.
The computer power supply may have failed. Do you get the "post beep"?
If not- remove the BIOS battery, move the jumper to "Clear BIOS" . Insert BIOS battery, and try to boot. Put jumper back to normal position and try boot again. If you do not get the post beep, swap power supply for a known good one, and try boot again. If it still does not boot and give you a post beep, look to see if there is a removable BIOS chip- pop it out and put it back in.place, this will clean the terminals. Go through and reset BIOS, as above, and try boot. If the system is functional, it should now boot up, but prompt for you to run the setup program.
If it does not boot, the problem is relating to motherboard/processor.
A Blinking Amber or Yellow power button means that the power supply is receiving power from the source but is unable to properly distribute it to the components. This can be caused by a defective power supply or a defective motherboard. Just to make sure that nothing else is causing the problem, remove any PCI cards like modem, video card, sound card, etc... Remove the memory modules and disconnect cables to CD/DVD drives. Look at the USB ports to see if any are damaged.
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The hard disk may have died. Check the BIOS and check the hard disk setting, if it appears OK then boot up with a DOS floppy startup boot disk, and select boot up without CD-ROM support, then type fdisk, answer Y to large disk support, select 4 to Display partition information. If you see all your disk partition the most likely your hard disk is OK. Most likely you operating system is damaged/corrupted and you will need to reinstall your operating system and drivers for all your devices.
If the blinking amber LED is on the computer itself and not the monitor, this is most likely a power supply issue. First thing to try would be replace the power supply. If the blinking led is on the monitor, it probably has bad capacitors and needs to be replaced. (or repaired)