User manual ACER VERITON M258

[. . . ] To access help files, see page 25. ____________________ Information in this document is subject to change without notice. Reproduction in any manner whatsoever without the written permission of Dell Inc. Trademarks used in this text: Dell, the ACER logo, Inspiron, Dell Precision, Dimension, OptiPlex, DellNet, PowerApp, PowerVault, PowerEdge, PowerConnect, Axim, and Latitude are trademarks of Dell Inc. ; Intel, Pentium, and Celeron are registered trademarks of Intel Corporation; Microsoft and Windows are registered trademarks of Microsoft Corporation. Other trademarks and trade names may be used in this document to refer to either the entities claiming the marks and names or their products. [. . . ] ADJUST THE WINDOWS VOLUME CONTROL -- Click or double-click the speaker icon in the lower-right corner of your screen. Ensure that the volume is turned up and that the sound is not muted. Video and Monitor Problems If the screen is blank NOTE: See the monitor documentation for troubleshooting procedures. CHECK THE MONITOR POWER LIGHT -- If the power light is off, firmly press the button to ensure that the monitor is turned on. If the power light is lit or blinking, the monitor has power. If the power light is blinking, press a key on the keyboard or move the mouse. CHECK THE MONITOR CABLE CONNECTION -- Check the connector for bent or broken pins. (It is normal for monitor cable connectors to have missing pins. ) Ensure that the video cable is connected as shown on the setup diagram for your computer. TEST THE ELECTRICAL OUTLET -- Ensure that the electrical outlet is working by testing it with another device, such as a lamp. 40 Solving Problems SWAP THE POWER CABLES -- Swap the computer and monitor power cables to determine if the power cable is defective. TEST THE VIDEO EXTENSION CABLE (IF USED) -- If you are using a video extension cable and removing the cable solves the problem, the cable is defective. TEST ANOTHER MONITOR -- If another monitor is available, connect it to the computer. CHECK THE DIAGNOSTIC LIGHTS -- See page 43. If the screen is difficult to read CHECK THE MONITOR SETTINGS -- See the monitor documentation for instructions on adjusting the contrast and brightness, demagnetizing (degaussing) the monitor, and running the monitor self-test. MOVE THE SUBWOOFER AWAY FROM THE MONITOR -- If your speaker system includes a subwoofer, ensure that the subwoofer is at least 60 cm (2 ft) away from the monitor. · If the problem persists or the computer has integrated video, contact Dell (see page 83). Reseat all power and data cables and restart the computer. ABCD A possible floppy or hard drive failure has occurred. ABCD A possible USB failure has occurred. Reinstall all USB devices, check cable connections, and then restart the computer. ABCD No memory modules are detected. ABCD · Reinstall all memory modules (see page 68) and restart the computer. · To eliminate the possibility of a faulty memory connector, remove all memory modules (see page 68), reinstall one memory module (if the computer supports a single module), and then restart the computer. If the computer starts normally, move the memory module to a different connector and restart the computer. Continue until you have identified a faulty connector or reinstalled all modules without error. = yellow = green = off Advanced Troubleshooting 45 www. dell. com | support. dell. com Light Pattern Problem Description Memory modules are detected, but a memory configuration or compatibility error exists. Suggested Resolution · Ensure that there are no special memory module/memory connector placement requirements (see page 68). · Verify that the memory modules that you are installing are compatible with your computer (see page 68). · If the problem persists, contact Dell (see page 83). · Ensure that the cables are properly connected from the hard drive, CD drive, and DVD drive to the system board (see page 61). · If the problem persists, contact Dell (see page 83). None. ABCD Other failure has occurred. ABCD The computer is in a normal operating condition after POST. ABCD = yellow = green = off Dell Diagnostics If you experience a problem with your computer, perform the checks in "Solving Problems" on page 23 and run the Dell Diagnostics before you contact Dell for technical assistance. [. . . ] These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the manufacturer's instruction manual, may cause harmful interference with radio communications. Operation of this equipment in a residential area is likely to cause harmful interference, in which case you will be required to correct the interference at your own expense. Class B This equipment has been tested and found to comply with the limits for a Class B digital device pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. [. . . ]