Question about HP Compaq Presario SR2150NX PC Desktop

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HP M1050Y - not powering up after power surge

Lightning hit the house while PC was in sleep mode. Surge protector still has greenlight and the green light is on at the back of the PC but that's about it. When I click the ON/START button no sound at all.

I took the power supply out and was wondering if I bring it to best buy, would you be able to diagnose it or do I have to bring the entire box.

Thanks :-)

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The green light at back is probably the NIC or network interface card, which means the computer is receiving power. Just not enough apparently. Try changing the power cords from being plugged into the surge protector to being plugged dirctly into wall socket. When you do this take the ethernet cable out before turning it ON.

Posted on Jun 24, 2008

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Posted on Jan 02, 2017

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When and How Should a Surge Protector Be Used on a Fixed Switch?


Common Causes of Lightning Strikes
  • Outdoor network cables or power cables are routed overhead.
  • A switch is deployed outdoors but is not properly grounded.

Damages of Lightning Strikes
  • If power cables of a switch are routed overhead in an outdoor environment, lightning strikes may burn the power supplies.
  • If network cables of a switch are routed overhead in an outdoor environment, lightning strikes may burn interfaces of the switch.
When a switch undergoes lightning strikes, overvoltage is induced by lightning on network cables and transmitted to interior of the chassis. The surge protection measures, such as lightning rod and chassis grounding cannot prevent the damage. Therefore, surge protectors or surge protection circuits are recommended.

Surge Protector Use Precautions Take the following precautions to protect a switch from lightning:
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  • Avoid routing cables overhead in an outdoor environment. Bury cables underground or route them in steel tubes.
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  • When installing a network interface surge protector, connect the IN end to terminals and the OUT end to network interfaces of the switch.
If a fixed switch is installed in a network box, follow these instructions:
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  • The maximum length of a ground cable cannot exceed 40 cm, and a length of smaller than 15 cm is recommended.
  • If the network box is located outdoors and power cables are routed aerially over a long distance (more than 300 m) to the network box, it is recommended that you install a power supply surge protector in the network box. The decoupled power cable must be at least 3 m long
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