System Lights
Your power button light and hard-drive activity light may indicate a computer problem.
Power Light
Problem Description
Suggested Resolution
Solid green
Power is on, and the computer is operating normally.
No corrective action is required.
Blinking green
The computer is in the suspended state (Microsoft® Windows® 2000 and Windows XP).
Press the power button, move the mouse, or press a key on the keyboard to wake the computer.
Blinks green several times and then turns off
A configuration error exists.
Check the diagnostic lights to see if the specific problem is identified.
Solid amber
The Dell Diagnostics is running a test, or a device on the system board may be faulty or incorrectly installed.
If the Dell Diagnostics is running, allow the testing to complete.
Check the diagnostic lights to see if the specific problem is identified.
If the computer does not boot, contact Dell for technical assistance (see your computer Owner's Manual for information about how to contact Dell).
Blinking amber
A power supply or system board failure has occurred.
Check the diagnostic lights to see if the specific problem is identified. Also, see "Power Problems" in your computer Owner's Manual.
Solid green and a beep code during POST
A problem was detected while the BIOS was executing.
See "Beep Codes" for instructions on diagnosing the beep code. Also, check the diagnostic lights to see if the specific problem is identified.
Solid green power light and no beep code and no video during POST
The monitor or the graphics card may be faulty or incorrectly installed.
Check the diagnostic lights to see if the specific problem is identified. See "Video and Power Problems" in your computer Owner's Manual.
Solid green power light and no beep code but the computer locks up during POST
An integrated system board device may be faulty.
Check the diagnostic lights to see if the specific problem is identified. If the problem is not identified, contact Dell for technical assistance. See your computer Owner's Manual for information on how to contact Dell.
Hard-Drive Activity Light
Problem Description
Suggested Resolution
Solid green
The hard-drive activity light is on when the computer reads data from or writes data to the hard drive. The light might also be on when a device such as a CD player is operating.
No corrective action is required
More info on your system you can get from the link below,
http://support.dell.com/support/edocs/systems/dim5150/en/sm/tshoot1.htm#wp1114195
also oyur system specks can be seeb from the link below,
http://support.dell.com/support/edocs/systems/dim5150/en/sm/index.htm
