Other problems

Solving computer problems

Problem: The computer locks or does not accept any input.

Solution: Your computer might lock when it enters standby mode during a communication operation. Disable the standby timer when you are working on the network.

To turn off the computer, press and hold the power switch for 4 seconds or more.

Problem: The computer does not turn off with the power switch.

Solution: If the standby indicator is on and you are working under battery power, change your power source to ac power and push Fn key to resume normal operation, then shut down the computer.

If you still have a problem, press and hold the power switch for 4 seconds or more; this forces the computer to turn off.

Problem: The computer does not start from a device you want, such as a diskette drive.

Solution: Refer to the Startup menu of the IBM BIOS Setup Utility. Make sure that the startup sequence in the IBM BIOS Setup Utility is set so that the computer starts from the device you want.

Also make sure that the device from which the computer starts is enabled by checking that there is no ! mark preceding the device name. If there is such a mark, clear the mark to enable the device by pressing the Insert key.

Problem: The computer does not respond.

Solution: IRQs for the PCI are all set as 11. The computer does not respond because it cannot share the IRQ with other devices. Refer to the IBM BIOS Setup Utility.

Problem: Playback of DVD is not smooth in Windows® 2000.

Solution: If you select the Maximum Battery mode for the Intel SpeedStep™ technology, this problem may occur. This mode is designed to achieve maximum battery life by switching the processor speed between the regular low speed and half of that speed, depending on how much the processor is used. If the use increases, Intel SpeedStep switches the processor speed to the lower speed. Operation in this mode can severely degrade the performance of the processor, and thus cause the playback of a DVD to be jerky.

30ThinkPad® R40 Series Service and Troubleshooting Guide

R40 specifications

The IBM R40, part of the ThinkPad series, is a robust laptop that was introduced in the early 2000s, catering primarily to business professionals and demanding users. The R40 is notable for its combination of performance, reliability, and mobility, making it an attractive choice for those seeking a dependable mobile computing solution.

One of the standout features of the R40 is its sturdy design, which embodies the ThinkPad philosophy of durability and ergonomics. The laptop has a classic black chassis made from high-quality plastic and reinforced with magnesium alloy, providing resistance against everyday wear and tear. The spill-resistant keyboard is another practical aspect, designed to prevent damage from liquid spills.

The R40 is powered by Microsoft Windows XP, one of the most widely used operating systems during its time. It is equipped with a range of processors, including the Intel Pentium 4 M or the Pentium M, which contribute to its commendable performance in multitasking and running business applications. The laptop typically comes with 256 MB to 2 GB of RAM, with the flexibility to expand depending on user requirements, and a hard drive capacity of 30 GB to 100 GB for ample storage of files and software.

In terms of display, the R40 features a 14.1-inch or 15-inch XGA screen, providing clear visual performance for both professional and personal use. The TFT display offers vibrant colors and decent viewing angles, making it suitable for presentations and video playback. Additionally, the R40 includes an integrated graphics card, which provides adequate performance for general use, though it may struggle with intensive graphic applications.

The R40 is equipped with essential connectivity options, including USB ports, a PC Card slot, and a built-in Ethernet port for wired connections. Optional wireless connectivity through Wi-Fi is also available, allowing users to stay connected to the internet on the go. The presence of a DVD-ROM drive or optional CD-RW/DVD combo drive enhances its functionality, enabling users to access software and media easily.

Battery life is a crucial factor for portable devices, and the R40 offers moderate longevity, enabling around 3 to 4 hours of usage on a fully charged battery, depending on usage patterns. This ability to sustain work sessions without constant access to a power outlet increases its appeal for business travelers.

Overall, the IBM R40 is characterized by its reliable build quality, moderate performance, and comprehensive features, making it a suitable choice for users who prioritize functionality and durability in their laptop. Its design has stood the test of time, and it remains a respected option among those with an appreciation for the classic ThinkPad lineage.