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Re: Compaq Deskpro SFF P3 500Mhz - Restoration (and loud "thinking noise" issues - would a PCI card improve?)

One other thing is I've noticed the CD-ROM cable is quite damaged. Where it's been folded over as part of the velcro cable management it's worn through enough to see bare metal, and the drive end cable clip is snapped on one side. I was expecting it to be 44-pin, but it actually seems to be 50-pin! …

Re: Compaq Deskpro SFF P3 500Mhz - Restoration (and loud "thinking noise" issues - would a PCI card improve?)

Mine came with a 550 CPU and no fan, I think the cooler above must have been modified. I doubt that, because the two boards differ apart from the minor details just in the presence of the CPU fan connector. Also, fan screws are typical "compaq" with grooves for a flat screwdriver or TORX wrench. …

Re: Compaq Deskpro SFF P3 500Mhz - Restoration (and loud "thinking noise" issues - would a PCI card improve?)

It's interesting that although you have a PIII 500 Katmai, it's only fitted with a passive cooler. I only have a 50 MHz faster CPU (550) and it was fitted with a small noisy fan powered from the mainboard. Passive-cooled I have a PII 350 Deschutes, where the mainboard does not have a connector for …

Re: POST code C1, no boot

Thanks for help, friends. I'll have more time this weekend, so I'll try to look at it again, but I don't hold out much hope. I'll flash the BIOS again if there's a problem with it, but personally, I don't think so. Unfortunately, I don't have the equipment or knowledge for more detailed testing ( …

Re: POST code C1, no boot

Thank you for the valuable advice, I measured the coil in phase and the voltage behind it is really 1.69V. So Vcore's voltage is probably fine, too. Then I'm running out of ideas. I don't know the history of the board and if the damage is somewhere between the PCB layers or under BGA, I have no way …

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