Computer wont turn on their is a lock with a letter (A) blinkiing

Shift for one letter, Caps lock for all caps. Lower right and left of keyboard on most computers.

On I phone, there is an arrow on the lower left - tap once, it will turn dark, and will cap one letter. Double tap, and it will use all caps, until you release by tapping again.

Try turning on your Caps Lock key? Normally they wont accept letters if the key is numbers only!

We need the brand and model number to try to assist you.

That icon is the indicator for Caps Lock (aka Shift Lock). When in the operating system (Windows), you can turn the icon on (or should be able to) by pressing the CAPS Lock key, and turn it off by pressing the CAPS Lock key again.

Turns on when the numeric keypad is enabled.

Turns on when wireless devices are enabled.

Turns on when the uppercase letter function is enabled.

Turns on when Mini PCI functionality and Bluetooth® wireless technology are enabled. To enable or disable Mini PCI functionality and Bluetooth wireless technology, press <Fn><F2>.
NOTE: Bluetooth wireless technology is an optional feature on your computer, so the icon turns on only if you ordered Bluetooth wireless technology with your computer.
For more information, see the documentation that came with your Bluetooth wireless technology.

Turns on when the scroll lock function is enabled.

Here is the answer! memory problem! go to this site. http://www.laptop-junction.com/toast/content/dell-caps-lock-light-flashing-blinking

The green light blinking in the back indicates that the power supply went bad and is not turning on, go ahead and get the power supply replaced. Normally that light is supposed to be fully lit and green.

hi

try pressing the fn key and num lock

find your manual in your language here and follow language setup instruction to your display in your language

Here's something that might also be useful. After you turn on the set, and get the regular red blinky lights, hold down the Device and Menu buttons together for about 5 seconds.
The Power light will start to flash in a two digit sequence.
please post your error code

It means that the horizontal sweep dirived power supply did not start up. The standby supply started and then when the horizontal started to but was shut down because of a short, the main supply also shut down, Thats what the 5 blinks compared to the 6 blinks mean. Now what can yoiu do. It all depends on how much you know about solid state serviceing. iof you know how to unsolder and resolder, read a schematic diagram, know how to use a scope and /or multimeter, know how to test transistors , capacitors and resistors, then maybe you can troubleshoot this puppy. If you answered just a maybe to any of the above, call in a pro to assist you as these sets have no user serviceable parts inside them. Also lots o ,lots o high voltage inside of them, even when they are unplugged. Now if you do know anything about electronics, first thing I would do would be to check the horizontal output trasistor along with the flyback transformer.