Thread: Computer turns on but no signal for screen

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  1. #1 Computer turns on but no signal for screen 
    Knights of War PSP Elite Hacker KoW210's Avatar
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    Computer turns on but no signal for screen. - MS Chat Forum

    Okay I have been fixing this computer for a customer (got rid of viruses, updated xp, clean registries etc.) so I noticed that it only had 256MB of ram so I turned off the computer, unplugged everything and opened the case up and took out the ram stick to look up the model number etc. so I put it back in and close up the pc and I turn it on and it it'll load but the screen says no signal. What is wrong? Thanks! (PS They need they're pc by tomorrow too.)
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  2. #2  
    Senior Member I Modded My PSP Phoenix Knight's Avatar
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    So your fixing this for a customer? God i hope you don't work in a PC repair shop!! Sounds like you nicked the videocard, or didnt reseat it properly.
    "Pandora Battery, MMS, A jedi needs not these things"
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  3. #3  
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    I think it's the ram stick now, it needs to be replaced anyways it's only a 256mb stick I'm going to get a 1gb stick, it's going to cost me like 39 dollars from newegg - 1gb ddr 2100 266mhz 184-pin
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  4. #4  
    Senior Member I Modded My PSP Phoenix Knight's Avatar
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    The RAM shouldnt affect the video output? You say its booting? or just turning on (Power light showing)?
    "Pandora Battery, MMS, A jedi needs not these things"
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  5. #5  
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    Quote Originally Posted by Mitochondria View Post
    Probably fried the video card with electro static.....happens all the time when unexpierenced people open up computers.

    What exactly did you do before you opened the computer up? What did you change software wise? Are you sure its not the monitor?
    I'm good with computers, I've done this many times, I replaced the ram inside my acer aspire one with no problems, and no the only thing I did software wise was install avg free version scan the computer, cleaned the registry with cc cleaner, defrag the computer, and that's it. It worked fine untill I took out the ram stick and put put it back in.
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  6. #6  
    The King Of Chinatown PSP Elite Hacker Geek's Avatar
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    I agree with Mito it seems more than likely you fried his video output card, but here are a few reminders we all forget, 1 make sure it is actually connecting, 2 make sure the monitor works on other comps, 3 make sure internally the chip is not loose nor has suffered any damage




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  7. #7  
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    yes it is actually connected, yes the monitor is working on my computer right now, and the chip is not loose and has not suffered any damage.
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  8. #8  
    The King Of Chinatown PSP Elite Hacker Geek's Avatar
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    well if the first two are true then the second is not, because if it works on another and is connected then if its not damaged it should work, try a new vid card see if it makes the diff




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  9. #9  
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    I don't have any other vid cards to test it out with =[
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  10. #10  
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    try your own




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  11. #11  
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    Quote Originally Posted by Geek9 View Post
    try your own
    This motherboard is old, and I don't own a desktop anymore. I'm getting one as soon as I have enough money though.
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  12. #12  
    Senior Member I Modded My PSP EmuGamer's Avatar
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    If you are not getting bios tones at startup indicating the ram is bad (3 beebs) then the ram is most likley ok.

    I too used to fix computers for a living, try this.

    Reset the cmos. If you can't find the jumpers to clear it, remove the cmos battery for 30 minutes and put it back in.

    I bet 95% that removing the ram and putting it back in screwed up the cmos, older computers are goofy like that.
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  13. #13  
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    Quote Originally Posted by EmuGamer View Post
    If you are not getting bios tones at startup indicating the ram is bad (3 beebs) then the ram is most likley ok.

    I too used to fix computers for a living, try this.

    Reset the cmos. If you can't find the jumpers to clear it, remove the cmos battery for 30 minutes and put it back in.

    I bet 95% that removing the ram and putting it back in screwed up the cmos, older computers are goofy like that.
    Where on the motherboard is it?
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  14. #14  
    Senior Member I Modded My PSP EmuGamer's Avatar
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    It's different on each motherboard, so its hard to say for sure.

    It is generally near the cmos battery, its 3 pins, 2 of which are bridged by a small jumper. You simply move the jumper over to the other pin thats not jumped. looks like this
    IvI I
    you do this
    I IvI
    (the v being the jumper the I being the pins.) then you move it back to the original position after like 10 seconds.

    However if you cannot find the jumper and pins, simply remove the battery for 30 minutes and replace it, it will do the same thing.
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  15. #15  
    cusinnd
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    Try a different VGA cord or port. Or try another screen output like hdmi or s video.
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