What is causing the screen to go black/blank?

1. When you press the power button to turn it on, do you see any thing on screen, like the toshiba boot up screen or something like that. Or is it completely blank (black color) always.

2. Can you see a faint image of your desktop (try to see it in dark place with flash light). This is important to confirm.

3. Also, when you press power button, do you see the LED lights on laptop blinking or solid green (which ones are in blinking/solid) and do hear any sound ? Or do you feel that your laptop doesnt even try to boot.

4. Can you hear any Beeps when you try to turn on the computer. If yes, what is the sequence of those beeps.

Continued......
If you answers are -
1. blank
2. no image
3. only the satellite light is blue, the powercord is blue and the battery is blue
4. no noise

Please do the following carefully and let me know result :
1. Shutdown and Unplug your laptop.
2. Remove the battery from the laptop.
3. Wait 2-3 minutes
4. Now press ON (power button on laptop) for 1 minute
5. Then release the finger and wait one more minute.
6. Now plug in the power cable (dont insert battery yet) and press ON button.
7. Did your screen start working now ? (do you see windows loading)

You may try this fix. No guaranties though. Remove the battery and unplug power cable. Then hold down the "power" button for about 10 seconds. After that plug it back in and try turning it on. Again, this may NOT work but it has for others.

hp blink error code:
caps lock blink once: cpu error
caps lock blink twice: bios problem
etc,,,,
please, what is the numer of the blink ?

um u should turn your tv off for like 10 minutes , i think yourr tv is a internet tv so let it cool sometimes sony internet tvs freeze with black screen so try it out.
good luck :)

Count the blinks and pattern of the caps lock light flashing. They tell the technician what is going on with the system. If this is happening as soon as you press the power button you are probably having an issue with the Video Card, Memory or some other motherboard related issue.

Does the system seem like it is up and running? If not, it's definitely one of the three issues mentioned above.

Remove the Power Cord, Remove the Battery, Remove the Memory Cover on the bottom of the laptop, then remove one of thememory chips. Set the chip aside then try rebooting the computer. If it boots, then you know the memory chip you set aside is bad so mark an x onit with an ink pen. If it fails to boot then move the chip to the nextmemory slot and try rebooting. If it fails take the chip out and set itaside, then put the other chip in and try booting it in both slots. If itboots, just to verify that the chip set aside is bad, mark an x on it and putit into the open memory chip slot and try booting.The link below will gives you the blink code listing from hp website. When it opens up scroll down to to see what the blinking lights pattern means as to the cause of your system not booting.http://h10025.www1.hp.com/ewfrf/wc/document?docname=c01443366&lc=en&dlc=en&cc=uk&lang=en&rule=26781&product=3816592

Did it boot all the way? Do you hear the fan running, disk drive spinning? If it sounds like it booted but the display is black, try this:
When you press the power button do you hear fansrunning, hard drive spinning, lights on the computer, hear any beeps or lightsconstantly blinking, hear the DvD/CD drive click and the light on the drawer ofthe DvD/CD turn on for a second or two? If so the laptop is trying toboot or may have booted, but the screen is not showing for some reason.

Beep tones and blinking lights tells the technicians what is going on with thelaptop and why it is not booting. Most times it's a motherboard issuewhen you hear beeps or blinking lights continuous.

That is a security configuration on HP Laptops, depending on the way they blink is the problem your machine has.

Here is the web page where this info is posted, in case you need more info, hope this helps you to determain.

http://h10025.www1.hp.com/ewfrf/wc/document?docname=c01443366&lc=en&dlc=en&cc=uk&lang=en&rule=26781&product=3816592
This document pertains to HP Notebook PCs with the HP Unified Extensible Firmware Interface (UEFI) beginning in late-2008. On startup, you may see a blank screen. If the diagnostic utilities detect a specific problem with hardware components, the fan turns on, but the screen remains blank. To help identify the cause of the problem, various LED lights on the keyboard blink a series of codes. The diagnostic utilities use the LEDs near the Num Lock or Caps Lock keys to blink a series of error codes. At the end of the series the blinking stops. The pattern of blinks will occur any time you attempt to start the computer until the error is resolved. Battery power LED blinks The Battery power LED indicates the condition of the power supply. When starting the computer, or when the computer is in operation, use the chart to identify the power condition. Battery Power LED Component Tested Error Condition Battery power LED off, and Caps Lock/Num Lock off Battery or AC Adapter AC adapter not connected or failure

Battery low charge or failure Battery power LED blinking Battery Insufficient charge on the battery When new computer is used for first time, the white LED light for the AC power connector blinks. Battery is still in "Shipping Mode", the light continues to blink even when AC power is connected.

To resolve, turn off notebook, connect AC power and allow battery to charge for at least 30 minutes, then start computer. LEDs near Caps Lock and Number Lock keys blink when starting notebook The LED lights near the Caps Lock and Num Lock keys will blink if an error is detected during the start up process. The LEDs will blink a number of times in a sequence and then stop. The number of blinks in the sequence indicates what component caused an error when it was being tested during start up. If the LEDs stop blinking and the computer does not start, you can press the power button again to repeat the tests. Count the number of blinks, and use the chart to identify the error condition. Knowing the number of blinks is helpful when you contact an HP support agent for technical help. Caps Lock/Num Lock LED Component Tested Error Condition LEDs blink 1 time CPU CPU not functional LEDs blink 2 times BIOS BIOS corruption failure LEDs blink 3 times Memory Module error not functional LEDs blink 4 times Graphics Graphics controller not functional LEDs blink 5 times System board General system board failure LEDs blink 6 times BIOS BIOS authentication failure

Have you tried it with an external monitor?
If this does not help. then you may have a motherboard problem. The Dell motherboard is easily replaced and you can get one on e-Bay

it sounds like the power transformer maybe out on the set.it supplies power to the whole set and it sounds like it only getting partial power.