Diagnostic programs

Symptom	Action

The Enhanced Performance USB	Verify that:
Keyboard does not work.	v The computer is turned on.
	v The keyboard is securely connected to a USB connector on the front or rear of
	the computer.
	v No keys are stuck.
	If you cannot correct the problem, have the computer serviced. Refer to the
	warranty and safety information that is provided with your computer for a list of
	service and support telephone numbers.

The mouse does not work. The	Verify that:
computer does not respond to	v The computer is turned on.
the mouse.	v The mouse is securely connected to a USB connector on the front or rear of the

	computer.
	v The mouse is clean. Refer to “Cleaning the mouse” on page 50 for further
	information.
	If you cannot correct the problem, have the computer serviced. Refer to the
	warranty and safety information that is provided with your computer for a list of
	service and support telephone numbers.

The operating system will not	Verify that:
start.	v There is no diskette in the diskette drive.
	v The startup sequence includes the device where the operating system resides.
	Usually, the operating system is on the hard disk. See “Selecting a startup
	device” on page 42 for more information.
	If you cannot correct the problem, have the computer serviced. Refer to the
	warranty and safety information that is provided with your computer for a list of
	service and support telephone numbers.

The computer beeps multiple	Verify that no keys are stuck down.
times before the operating	If you cannot correct the problem, have the computer serviced. Refer to the
system starts.
	warranty and safety information that is provided with your computer for a list of
	service and support telephone numbers.

Diagnostic programs are used to test hardware components of your computer and report operating-system-controlled settings that can cause hardware failures. There are two diagnostic programs preinstalled on your computer to help you diagnose problems: PC-Doctor for Windows and PC-Doctor for DOS.

Notes:

1.You can download the latest version of the diagnostic programs from http://www.lenovo.com/support/. Type your machine type into the Use Quick Path field and click Go to find the downloadable files that are specific to your computer.

2.If you are unable to isolate and repair the problem yourself after you run PC-Doctor for Windows and PC-Doctor for DOS, save and print the log files created by both diagnostic programs. You will need the log files when you speak to a Lenovo technical support representative. (The log file created by PC-Doctor for Windows is automatically saved in C:\PCDR\DETAILED.TXT.)

48User Guide

8803, 8799, 8795, 8812, 8807 specifications

Lenovo has made significant strides in the smartphone market over the years, and among its noteworthy models are the Lenovo 8807, 8803, 8795, 8812, and 8791. Each of these devices brings a unique set of features, technologies, and characteristics that cater to different user preferences.

Starting with the Lenovo 8807, this model stands out with its robust performance, powered by a high-speed processor that delivers smooth multitasking capabilities. It features a high-resolution display, ensuring that users enjoy vivid colors and sharp visuals whether they are gaming, streaming videos, or browsing the web. The camera system on the 8807 is also impressive, equipped with multiple lenses that adapt to various lighting conditions, allowing for stunning photography.

The Lenovo 8803, on the other hand, emphasizes portability without compromising performance. It boasts a sleek design and lightweight construction, making it easy to carry around. The battery life is remarkable, providing all-day usage on a single charge, which is ideal for users who are constantly on the go. The device also offers various connectivity options, including 5G support, enabling users to enjoy fast internet speeds for seamless online experiences.

The Lenovo 8795 appeals to users seeking value for money. This model delivers essential features such as a decent camera, a reliable battery, and an intuitive user interface. It is designed to handle everyday tasks effortlessly, making it a great choice for those who do not need high-end specifications but still want a trustworthy smartphone that gets the job done.

Moving to the Lenovo 8812, this device merges style with functionality. It features an elegant design, utilizing premium materials that give it a sophisticated look. The display is expansive, providing an immersive experience for media consumption. Additionally, the 8812 comes with advanced security features, including facial recognition and fingerprint scanning, ensuring that user data remains safe.

Lastly, the Lenovo 8791 targets a niche market with its focus on durability. Built with military-grade materials, it is resistant to water, dust, and drops. This rugged smartphone is perfect for outdoor enthusiasts and those who work in challenging environments. Furthermore, it has enhanced battery management, allowing for extended usage in remote areas without frequent charging.

In summary, Lenovo's lineup including the 8807, 8803, 8795, 8812, and 8791 showcases the brand’s commitment to producing devices that meet diverse user needs, whether in terms of performance, design, or durability. Each model represents a blend of technology and practicality, making Lenovo a competitive player in the smartphone market.

Lenovo 8795, 8009, 8791, 8807, 8803, 8799, 8812 manual Diagnostic programs

Models: 8803 8799 8795 8812 8807 8791 8009

Symptom