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Mystery motherboards - Compaq Deskpro SB - won't boot
I have acquired three Socket 370 motherboards, marked 305 Rev0AS21, also
with part numbers 011305-101 and 011306-000. From what I can tell these are the basis for a Deskpro SB (?) machine, but none of them will boot! They have on-board graphics, and a memory card marked "4Mb AIMM 133Mhz CL3" is provided for the AGP slot. I have tried various processors and memory sticks - the LEDs on the board light when I plug in the PS and trip the 'power on' pins, but no boot! I notice that some of the pins to the panel are marked SCSI LED and LOOPBACK - are either of these crucial to the boot sequence? Any help appreciated!! Peter Allison Swindon, UK. |
#2
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Mystery motherboards - Compaq Deskpro SB - won't boot
I ***THINK*** I have run into this motherboard. This is a full ATX board?
Check the power supply connector, counting its "pins". IIRC, it is 24-pin, rather than the more usual 20-pin ATX connector of that era. I had some that used 800MHz Pentium 3 CPUs. The SCSI LED and LOOPBACK jumpers are not critical. The pinout from the motherboard to the front panel (on-off momentary switch, power-on LED, HDD active LED) is something I cannot remember... Ben Myers On Mon, 30 Jun 2008 15:20:35 +0100, "Peter Allison" wrote: I have acquired three Socket 370 motherboards, marked 305 Rev0AS21, also with part numbers 011305-101 and 011306-000. From what I can tell these are the basis for a Deskpro SB (?) machine, but none of them will boot! They have on-board graphics, and a memory card marked "4Mb AIMM 133Mhz CL3" is provided for the AGP slot. I have tried various processors and memory sticks - the LEDs on the board light when I plug in the PS and trip the 'power on' pins, but no boot! I notice that some of the pins to the panel are marked SCSI LED and LOOPBACK - are either of these crucial to the boot sequence? Any help appreciated!! Peter Allison Swindon, UK. |
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Mystery motherboards - Compaq Deskpro SB - won't boot
Yes, Ben, that's the one.
I have used a power supply with a 24-pin connector, should that not do the trick? Peter "Ben Myers" wrote in message ... I ***THINK*** I have run into this motherboard. This is a full ATX board? Check the power supply connector, counting its "pins". IIRC, it is 24-pin, rather than the more usual 20-pin ATX connector of that era. I had some that used 800MHz Pentium 3 CPUs. The SCSI LED and LOOPBACK jumpers are not critical. The pinout from the motherboard to the front panel (on-off momentary switch, power-on LED, HDD active LED) is something I cannot remember... Ben Myers On Mon, 30 Jun 2008 15:20:35 +0100, "Peter Allison" wrote: I have acquired three Socket 370 motherboards, marked 305 Rev0AS21, also with part numbers 011305-101 and 011306-000. From what I can tell these are the basis for a Deskpro SB (?) machine, but none of them will boot! They have on-board graphics, and a memory card marked "4Mb AIMM 133Mhz CL3" is provided for the AGP slot. I have tried various processors and memory sticks - the LEDs on the board light when I plug in the PS and trip the 'power on' pins, but no boot! I notice that some of the pins to the panel are marked SCSI LED and LOOPBACK - are either of these crucial to the boot sequence? Any help appreciated!! Peter Allison Swindon, UK. |
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Mystery motherboards - Compaq Deskpro SB - won't boot
Peter,
You need the specific Compaq 24-pin power supply intended for this motherboard. Why did Compaq use a 24-pin power supply? Why do any of these companies use such proprietary hardware? Dell did similar extremely stupid things with its Pentium 3 systems, too. Unfortunately, I seriously doubt that the pinout on a newer P4 24-pin power supply matches this one... Ben Myers On Wed, 2 Jul 2008 11:25:44 +0100, "Peter Allison" wrote: Yes, Ben, that's the one. I have used a power supply with a 24-pin connector, should that not do the trick? Peter "Ben Myers" wrote in message .. . I ***THINK*** I have run into this motherboard. This is a full ATX board? Check the power supply connector, counting its "pins". IIRC, it is 24-pin, rather than the more usual 20-pin ATX connector of that era. I had some that used 800MHz Pentium 3 CPUs. The SCSI LED and LOOPBACK jumpers are not critical. The pinout from the motherboard to the front panel (on-off momentary switch, power-on LED, HDD active LED) is something I cannot remember... Ben Myers On Mon, 30 Jun 2008 15:20:35 +0100, "Peter Allison" wrote: I have acquired three Socket 370 motherboards, marked 305 Rev0AS21, also with part numbers 011305-101 and 011306-000. From what I can tell these are the basis for a Deskpro SB (?) machine, but none of them will boot! They have on-board graphics, and a memory card marked "4Mb AIMM 133Mhz CL3" is provided for the AGP slot. I have tried various processors and memory sticks - the LEDs on the board light when I plug in the PS and trip the 'power on' pins, but no boot! I notice that some of the pins to the panel are marked SCSI LED and LOOPBACK - are either of these crucial to the boot sequence? Any help appreciated!! Peter Allison Swindon, UK. |
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Mystery motherboards - Compaq Deskpro SB - won't boot
As you say, why people like Compaq and Dell do this, just to frustrate
people like you and I! I guess the P4 24-pin power supply hadn't been invented when these boards came out! Fortunately the person who sold me these three boards has been very understanding so far, now I need to see if they can see my point of view! Peter "Ben Myers" wrote in message ... Peter, You need the specific Compaq 24-pin power supply intended for this motherboard. Why did Compaq use a 24-pin power supply? Why do any of these companies use such proprietary hardware? Dell did similar extremely stupid things with its Pentium 3 systems, too. Unfortunately, I seriously doubt that the pinout on a newer P4 24-pin power supply matches this one... Ben Myers On Wed, 2 Jul 2008 11:25:44 +0100, "Peter Allison" wrote: Yes, Ben, that's the one. I have used a power supply with a 24-pin connector, should that not do the trick? Peter "Ben Myers" wrote in message . .. I ***THINK*** I have run into this motherboard. This is a full ATX board? Check the power supply connector, counting its "pins". IIRC, it is 24-pin, rather than the more usual 20-pin ATX connector of that era. I had some that used 800MHz Pentium 3 CPUs. The SCSI LED and LOOPBACK jumpers are not critical. The pinout from the motherboard to the front panel (on-off momentary switch, power-on LED, HDD active LED) is something I cannot remember... Ben Myers On Mon, 30 Jun 2008 15:20:35 +0100, "Peter Allison" wrote: I have acquired three Socket 370 motherboards, marked 305 Rev0AS21, also with part numbers 011305-101 and 011306-000. From what I can tell these are the basis for a Deskpro SB (?) machine, but none of them will boot! They have on-board graphics, and a memory card marked "4Mb AIMM 133Mhz CL3" is provided for the AGP slot. I have tried various processors and memory sticks - the LEDs on the board light when I plug in the PS and trip the 'power on' pins, but no boot! I notice that some of the pins to the panel are marked SCSI LED and LOOPBACK - are either of these crucial to the boot sequence? Any help appreciated!! Peter Allison Swindon, UK. |
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Mystery motherboards - Compaq Deskpro SB - won't boot
"Peter Allison" wrote in message ... I have acquired three Socket 370 motherboards, marked 305 Rev0AS21, also with part numbers 011305-101 and 011306-000. https://www.serversupply.com/product...p?q=011305-101 http://www.serversupply.com/MOTHERBO...011305-101.htm From what I can tell these are the basis for a Deskpro SB (?) machine, but none of them will boot! They have on-board graphics, and a memory card marked "4Mb AIMM 133Mhz CL3" is provided for the AGP slot. http://www.shopping.com/xPO-Samsung-...-Memory-Module I have tried various processors and memory sticks - the LEDs on the board light when I plug in the PS and trip the 'power on' pins, but no boot! By 'BOOT' do you mean " any visible power up sequence " ? or do you have a drive in there ? I notice that some of the pins to the panel are marked SCSI LED and LOOPBACK - are either of these crucial to the boot sequence? Any help appreciated!! Peter Allison Swindon, UK. Do you know memory cards are good ? If you remove memory - do you get beep code ? The SCSI LED would just show disk activity. "Loopback pins" This is on the front panel ? or motherboard ? === BTW all HP Socket 370 motherboards on his site: http://www.shopping.com/-socket+370+...boards+Hewlett |
#7
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Mystery motherboards - Compaq Deskpro SB - won't boot
No drives attached.
The pins marked 'loopback' are on the motherboard alongside the 'power switch' pins. LEDs light up, but power supply fan does not run and no beeps or POST messages. Peter "- Bobb -" wrote in message . .. "Peter Allison" wrote in message ... I have acquired three Socket 370 motherboards, marked 305 Rev0AS21, also with part numbers 011305-101 and 011306-000. https://www.serversupply.com/product...p?q=011305-101 http://www.serversupply.com/MOTHERBO...011305-101.htm From what I can tell these are the basis for a Deskpro SB (?) machine, but none of them will boot! They have on-board graphics, and a memory card marked "4Mb AIMM 133Mhz CL3" is provided for the AGP slot. http://www.shopping.com/xPO-Samsung-...-Memory-Module I have tried various processors and memory sticks - the LEDs on the board light when I plug in the PS and trip the 'power on' pins, but no boot! By 'BOOT' do you mean " any visible power up sequence " ? or do you have a drive in there ? I notice that some of the pins to the panel are marked SCSI LED and LOOPBACK - are either of these crucial to the boot sequence? Any help appreciated!! Peter Allison Swindon, UK. Do you know memory cards are good ? If you remove memory - do you get beep code ? The SCSI LED would just show disk activity. "Loopback pins" This is on the front panel ? or motherboard ? === BTW all HP Socket 370 motherboards on his site: http://www.shopping.com/-socket+370+...boards+Hewlett |
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