It's the northbridge and the heatsink next to the sata ports on the mobo. HP pretty much messed it up and not only used a cheap heatsink and paste, but also put it right next to the sata ports. so what happens is the northbridge overheats due to poor heat cooling and locks up the mobo sata controller. unplug just the sata drives and power to them. computer will boot just fine as long as there wasnt too much damage to the controller. solution. sue HP and never buy again. fix. take off heatsink and replace with fan heatsink combo with a heat gun and epoxy glue. hmmm. also what i actually did was put in a add on video card gt430 because price was right. put an old cpu/heatsink set on top of video card as close to the old heat sink as possible.
a better solution. by two add on cards. one being the video card and another being a sata controller card. while you are at it. get a gigabit lan card.
Hi,
you may even find a new graphics card won't help. you are most likley suffering from an overheated northbridge. there not usually monitored for temp this is on the MB so, not good news as this will eventually go dead. and even re- greasing at this point won't help. however. by disassembling both the video card and northbridge heat sinks. you should find one of them pretty dried out.
GL
hope this helps
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Thanks
Jamer
ā¢ HyperTransport 1.0 supporting speed up to 1000MT/s
Chipset
ā¢ NVIDIAĀ® nForce 630a & GeForce 7025 chipset
Main Memory
ā¢ Supports Dual Channel DDR2 667/800
- 2 DDR2 DIMMs (240pin / 1.8V)
- Supports a maximum memory size up to 8GB.
Slots
ā¢ One PCI Express 1.0 x16 slot.
ā¢ One PCI Express 1.0 x1 slot.
ā¢ Two PCI slots (support 3.3v/5v PCI bus interface).
On-Board IDE
ā¢ One IDE port by NVIDIAĀ® nForce 630a & GeForce 7025 chipset
- Supports Ultra DMA 66/100/133 mode
- Supports PIO, Bus Master operation mode
- Can connect up to two IDE devices
On-Board SATA
ā¢ Two SATA II ports by NVIDIAĀ® nForce 630a & GeForce 7025 chipset
- Supports storage and data transfers at up to 3Gb/s
RAID Function
- SATA II 1~2 supports RAID 0, 1 mode by NVIDIAĀ® nForce 630a & GeForce 7025 chipset
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