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Power supply died, replaced it now Operating System Not found


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#1
serene31

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Hi, new here and like what I see so far. I recently had to replace the power supply in an older desktop that is running XP. Power supply started right up, but I am getting an operating system not found screen. My fans are running and I can hear the hard drive and the cd rom running. When I go into the BIOS to set to boot from CD, it doesn't do it. I had this problem before, but it booted from the cd just fine and was able to reinstall. Does this mean that I need to replace my CD rom? Thanks in advance!
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#2
ClickRight

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Check to make sure you didn't accidentally knock out any cables when you were in there, specially any IDE cables (grey/black cables that plug into your hard drive or CD-ROM drive) or SATA cables (usually red cables used in newer computers to connect to ROM drives and hard drives.)

It is possible that your bad power supply took some stuff out with it though :whistling: How did it blow (silently or was there a crackling sound or smoke?)
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#3
serene31

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Thanks for the response. It just died quietly and suddenly. The screen just went black. I've checked all the cables and nothing is loose. When I turn it on, it will do the screen where it tells me how much ram, etc I have, the CD rom drive, and all that. I get the option to hit F1 or F2, but if I hit F1 it takes a few minutes and it then gives me the black screen with Operating System not Found. It had happened to me before on a different PC, but when I put in the CD to reinstall the OS, it installed just fine. If it's seeing the CD rom in there, that would mean that it is working, right? I get the light flashing on it. Any suggestions?
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#4
123Runner

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For clarification purposes, changing out a power supply would not mean that you need to reinstall the OS.
If the OS is not found, it does sound like a cable issue. Make sure that the ribbon cable to the HD and CD rom are seated properly. Pull them out and actually reseat them.
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