Computer powers on but does not boot - no videe output.
Hi - Someone was throwing this computer away at the dump. It looked pretty good, the guy said it wasn't working anymore. I decided to take it home and give it a look as we could use another desktop for schoolwork. The computer turns on but there is nothing displayed on the monitor. I am using a known good monitor and cable. The disk drives open and close, the CPU cooling fan is on, but there is no video output and the computer does not seem to be booting. When the computer powers on, I can feel the harddrive internally moving also. Don't want to spend a lot of time or money on this, but if there are a few simple things to try, I'm game. Thanks.
Re: Computer powers on but does not boot - no videe...
Video card may be bad... or even hard drive. "we could use another desktop for schoolwork" does that mean you have another CPU setup? Try switching video cards and harddrive (and even other components) with your working CPU.
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Re: Computer powers on but does not boot - no videe...
Open it up and verify everything is connected then remove or disconnect anything not required to boot (sound card, modem, cd drives, etc.) If it boots at this point you can reconnect devices one by one to find the failed hardware.
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If computer has an output for another monitor , plug extra monitor into it. If other monitor also does not work then the problem lies within the video circuits. If external monitor works then the hassle is with the lcd screen.
Either way it is not a cheap repair since it is an all in one product with proprietary parts. Add to that the labor factor and you might be looking at a new unit.
If the outlet is good and the cord is good, you may have indeed blown the fuse in the power supply. That is the only fuse. The fuse in the power supply is usually "hard-wired". Not necessarily, but usually. You would need someone familiar with them to replace it if it is blown.
Some computers have a green LED on the back of the computer near the power cord. Do you have one? Is it on? You can also look to see if the small green LED is on on the motherboard.
If you get no indication of power, the power supply is probably gone. A new on is about $25 and pretty simple to replace.
Remove the power cord from the back of the computer. Then open the side casing of the tower and unplug the 24 pin block connector from the motherboard. The 24 pin block connector looks like this >>>>>
Once removed press the on/off button on the computer to dispel and residual power from the motherboard. Then connect the block connector again and put the side panel back on and then plug the power cord back in and try to boot the computer up.
If its still the same then the power supply inside the computer may need replacing.
Is it throwing up a 'disk read' or 'no physical drive installed' error?
In most cases, a boot error in bios (the pre-installed program a computer uses prior to loading an operating system such as Windows, Linux or Mac OSX) usually points to:
- disconnected cables running from the board to the hard drive(s) - malfunctioning ports (IDE ports especially) - dead or dying hard drive(s)
Open the case (if you don't mind voiding a warranty that you may still have) and check the cables that run from your drive(s) to the board and from the power supply to the hard drive(s) to ensure that the cables are firmly attached at all ends.
If so, the best way to test a hard drive without spending at least $100.00 for diagnostics is to install it(or them) into another computer and boot. If that computer boots with your drive(s), the problem may be on the board or with the PSU (power supply unit). In either case, you'll probably be looking at anywhere between $100.00 and $200.00 to replace.
Before you do anything, though, there's a button battery attached to the board; remove that for about a half hour, reattach it then try to boot. Sometimes this can clear up boot issues.
If the hard drive has died, DO NOT dispose of it. Most people think that their data is lost in the death of a drive and that's not true. Take it to a professional 'computer guy' and have the data extracted and saved to a new drive. The cost should be around $100.00 for data recovery... no more than that unless a new drive is part of the deal.
Most likely an issue with the Video Card or Video driver. * Boot to safe mode by tapping F8 while starting up the computer. Selected safe mode with the keyboard and hit enter. Login to your user account. You should see the words “Safe Mode” on all four corners, * Open device manager – Right click “My Computer” – Select “Manage” – Selected device manager from the left. Under display driver, you should see your vide card listed. Right click on it and select “Disable”. Now restart your computer and if this resolves the issue, then the vide card may be at fault. You could also try updating the video driver. Do let me know if you get this far.
Well old retired guy there is so many moving parts in a computer. the fans , on the processor ,the power supply, and one on the box of some.You have the cdrom , the a:/ drive and hard drive.You can unplug everyone except the power supply and it will still turn on. If the ticking still exist then its electrical snapping in the power supply.There is more than one voltage coming out of the power supply. Part of its 5 volt and part of it is 12 volt so then part of the supply could be working and another part not working.My guess is get a used power supply and it will work fine.
i got a gateway computer too. And i got the same problem with u guys before from 2 reason..... - first was when i messing inside my computer ( i dont really know maybe something get unplug), and how i fix it was touching everything inside my computer hehe make sure everything is pluged in - second was i was trying to overclocking my computer and bam is shut down, i turn it on again, the fan keep running faster than normal and not slowing down hehe screen doesnt turn on either. how i fix it was unplug the power of ur computer, hit the power buttom couple to let the the power in ur computer run out, plug the power back in and problems fixed. Good luck