Testing an AC adapter

Test the AC adapter if the computer exhibits any of the following symptoms when it is connected to AC power:

●The computer does not turn on.

●The display does not turn on.

●The power lights are off.

To test the AC adapter:

1.Shut down the computer.

2.Remove the battery from the computer.

3.Connect the AC adapter to the computer, and then plug it into an AC outlet.

4.Turn on the computer.

●If the power lights turn on, the AC adapter is working properly.

●If the power lights remain off, check the connection from the AC adapter to the computer and the connection from the AC adapter to the AC outlet to make sure the connections are secure.

●If the connections are secure and the power lights remain off, the AC adapter is not functioning and should be replaced.

Contact HP Customer Support for information on obtaining a replacement AC power adapter.

Using HP CoolSense (select models only)

When you are using your computer on the move or when lounging around the house, HP CoolSense helps deliver the optimum level of comfort by automatically adjusting performance and internal fan settings.

When HP CoolSense is on, it automatically detects if your computer is not in a stationary position and makes further adjustments to performance and fan settings to keep the surface temperature of your computer at the optimum level of comfort.

When HP CoolSense is off, performance and fan settings are not adjusted beyond your computer's default cooling settings. When your computer is not in a stationary position, the surface temperature of your computer may therefore be higher than it would be with HP CoolSense on.

26 Chapter 4 Power management

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HP CQ57-439WM, CQ57-489CA, CQ57-489WM, CQ57-339WM, CQ57-315NR Using HP CoolSense select models only, Testing an AC adapter
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CQ57-217NR, CQ57-315NR, CQ57-339WM, CQ57-489CA, CQ57-489WM specifications

The HP CQ57 series laptops, including models CQ57-319WM, CQ57-314NR, CQ57-310US, CQ57-339WM, and CQ57-315NR, are designed to cater to everyday computing needs with an emphasis on functionality, affordability, and user-friendly performance.

Each model in the CQ57 series is powered by the AMD Fusion technology, which combines a CPU and GPU on a single chip. This integration provides an enhanced performance for everyday tasks while ensuring energy efficiency, making it suitable for students and home users alike. The series typically features an AMD E-300 or similar dual-core processor, delivering adequate processing power for web browsing, document editing, and light multimedia consumption.

The CQ57 laptops come equipped with a spacious 15.6-inch display, which offers a resolution of 1366 x 768 pixels. This display size is ideal for various activities, including watching videos and browsing the web. The LED-backlit technology enhances clarity and reduces power consumption, contributing to longer battery life.

When it comes to storage, the CQ57 series provides a standard hard drive capacity, typically around 500GB, allowing users ample space for their files, applications, and multimedia content. The inclusion of 4GB of RAM ensures a smooth multitasking experience, enabling users to run several applications simultaneously without significant lag.

Connectivity options are well-equipped in these models, which often include USB 2.0 and HDMI ports, enabling the connection of essential peripherals and external displays. Additionally, built-in Wi-Fi and Ethernet capabilities ensure that users can stay connected to the internet seamlessly.

One of the standout features of the HP CQ57 series is its focus on portability. Weighing roughly 5.6 pounds, these laptops strike a balance between durability and weight. This makes them suitable for users who may need to transport their devices frequently, whether for school, work, or travel.

In terms of operating system, these laptops typically come pre-installed with Windows 7, though upgrades to more recent versions are often possible, ensuring that users receive a modern computing experience.

Overall, the HP CQ57 series, with its variety of models, offers a solid and affordable choice for users seeking reliable performance for daily tasks. With its blend of functionality, decent specifications, and user-friendly features, the CQ57 laptops are a commendable entry in the budget laptop market.
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