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the 4-pin ATX Power Connector

T

tokamak

Golden Member
I'm going to show my ignorance here - it's been a while since I've built a computer.

Anyway, I got my parents a new Sempron + motherboard to replace their Celeron 533. Installed the new stuff, and it POSTed just fine, but when it begins to load Windows, it just reboots. Every single time, as soon as the progress bar comes up, reboot. Only 2 things I could think of:

1) The old power supply didn't have the extra 4 pin power connector, so there was nothing plugged into that plug on the motherboard. Could that be the problem?

2) Something to do with the contents of the hard drive itself. I didn't format it before changing the CPU/mobo. Some sort of driver conflict?
 
1) Yes, it should be plugged in. You can get an adapter for older PSUs that don't have the ATX12V plug. It probably won't work properly without it, since the CPU won't be getting enough juice.

2) If you just took the old HD w/ Windows installation and tried to boot it on totally different hardware, it probably won't work. Boot from an appropriate Windows CD and 'Repair' the installation (with WinXP/2K, start doing the install as normal, and it should detect the existing one and ask if you want to 'repair' it or blow it away).
 
Extra P4 power connector - 100% necessary, I'm surprised it even powered on without it. Unless you're talking about the boards with pci-e slots that use a 24-pin main atx connector instead of the old 20-pin atx connector, in that situation the 24-pin connector is not necessary.

And, if you're running XP Pro, you'll have to do a repair install to get it to accept the new hardware & boot back up.
 
And, if you're running XP Pro, you'll have to do a repair install to get it to accept the new hardware & boot back up.
Click to expand...

The alternative is to uninstall all your chipset and related drivers before migrating the HDD to the new system. If done correctly, it will cause the Windows install to just magically work in the new setup.
 
Originally posted by: Some1ne
And, if you're running XP Pro, you'll have to do a repair install to get it to accept the new hardware & boot back up.
Click to expand...

The alternative is to uninstall all your chipset and related drivers before migrating the HDD to the new system. If done correctly, it will cause the Windows install to just magically work in the new setup.
Click to expand...

Going from a Celeron 533 to a Sempron, there is no chance of that happening, a repair install is necessary. You can only do the uninstall of drivers if the two motherboards have the same Hardware Abstraction Layer (HAL), that's the APIC, ACPI, single / multi processor stuff. A Windows XP repair install is the only way you get Windows to work with the different HAL.
 
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