DELL U7021 ユーザーズマニュアル

Solving Problems

Troubleshooting Tips

Follow these tips when you troubleshoot your computer:

•

If you added or removed a part before the problem started, review the installation procedures
and ensure that the part is correctly installed.

•

If a peripheral device does not work, ensure that the device is properly connected.

•

If an error message appears on the screen, write down the exact message. This message may
help technical support personnel diagnose and fix the problem(s).

If an error message occurs in a program, see the program’s documentation.

Battery Problems

CAUTION:

There is a danger of a new battery exploding if it is incorrectly installed. Replace the

battery only with the same or equivalent type recommended by the manufacturer. Discard used
batteries according to the manufacturer's instructions.

CAUTION:

Before you begin any of the procedures in this section, follow the safety instructions

located in the Product Information Guide.

Drive Problems

CAUTION:

Before you begin any of the procedures in this section, follow the safety instructions

located in the Product Information Guide.

EPLACE

THE

BATTERY

—

If you have to repeatedly reset time and date information after turning on

the computer, or if an incorrect time or date displays during start-up, replace the battery (see page 113).
If the battery still does not work properly, contact Dell (see page 131).

NSURE

THAT

ICROSOFT®

INDOWS®

RECOGNIZES

THE

DRIVE

—

Click the Start button and

click My Computer. If the floppy, CD, or DVD drive, is not listed, perform a full scan with your
antivirus software to check for and remove viruses. Viruses can sometimes prevent Windows from
recognizing the drive.