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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hi look for a bulging or bad electrolytic capacitors in the PSU board which cause the output voltage drop, usually 1500 uf/ 16v.just replace those bad cap then it will resume to normal operation good luck thanks for consulting through fixya.
Physical memory dumps usually involve something using entirely too much RAM when they shouldn't be. The dump takes place to free up memory so that the system could keep running. A few things can cause this, few of them good.
If it's happened twice in a day, it probably means that some piece of hardware it about to go (or already has). Safe bet would be that a memory stick (or part of one) has gone bad. Since the computer expects to be able to use that, it's discovery that it doesn't have all the memory that it thought it did traumatizes the poor thing.
Think of how you'd feel if you discovered that your basement disappeared, right after you bought a bunch of stuff that needed to be stored in there. Your reaction might be to react by just throwing stuff away that you thought was no good and just taking up space. The downside would be that you might accidentally throw away something you need.
The good news is that a RAM dump is not permanently removing information; it's just removing it for the session until necessary. Still, dumps often require restarts because something necessary disappeared. It's not really a great analogy, but I think it helps explain the idea.
You might want to do a check on the RAM or the HDD to see what the problem is. There is also a possibility that it's from a program that isn't bright enough to only use the amount of RAM that's there.
Check for the standard voltages when the unit is on. The values may be marked on the circuit board. Standard voltages would be 5, 12, 24 and sometimes 3.3 volts. Other than that, the brand is pretty bad. Try and find the same set with a broken screen and try and make 1 good set out of 2 bad ones.
Scroll down to OMAR and read what he did, and the guy after him.
Basically, boot up your computer completely, remove the battery, put the battery back in, then reboot. It should solve it. I AM NOT RESPONSIBLE IF ANYTHING ADVERSE HAPPENS TO YOUR COMPUTER. These forum guys are pretty good. I've used their advice a lot over the years.
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.
there is a great possibility that your resolution or refresh rates are set too high for the monitor to display properly... boot the computer in safe mode and change the resolution and refresh rates to a lower setting or the recomended setting for the monitor.. 73 and good luck.
Old amps with no display (no computer) are repairable for ever, but
when the display goes out like in yours - it is pretty much not
economically repairable. You can look inside for any obvious
damage (black or blown parts) but thats doubtful. Check the
voltages on the power supply. Should find 5v, 12v maybe a
negative voltage. Could have lost a voltage regulator in the
power supply causing the digital circuits to be down. good luck