My home thiyeter dz590k is in powerprotection mode what can i do please help me urgent ?

You realize we are Fixya dot com and we aren't Sony Support? We don't do 'urgent remedies' although we do try to help for free.

https://www.google.com/search?q=Sony+DZ-+840K+Home+Theater+displaying+%22Please+Wait%22

I wrote this Fixya Tip which you can try first.

https://www.fixya.com/support/r29927004-dvd_player_or_cd_player_not_reading

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You apparently have a short somewhere in the speaker wiring.

What is the exact model number to your Videocon TV? Videocon uses both Toshiba and Sansui kits. Without knowing the exact kit fitted, it is difficult to inform you the correct service mode option. Anyway, check this and see whether it help you.

If the protect function works and causes hindrance to trouble shoot, cancel the protection function as described below, and it will be possible to enter the self-diagnostic function mode. (The protection functions other than the excess current dtect function will be disabled.)

While pressing the "Tone Control" and "Info" keys, press the "Power" key to turn on the power and keep pressing those 2 keys for 3 seconds longer.

The seld-diagnostic function mode is activated with the protection functions disabled.

In this mode, the "Sleep" segment of the Flourescent Display flashes to indicate that the mode is self-diagnostic function mode with the protection functions disabled.

Caution!!!! Usiong this product with the protection function disabled may cause further damage to your unit, so use special care when using this mode.

Please go to this page;

http://software.canon-europe.com/products/0010177.asp

Download suitable driver. download and install ccleaner, then follow this procedure:

1. disconnect printer from computer
2. delete printer and all printer software from computer
3, reboot computer in safe mode (f8 during boot up will give you selection) and log as an administrator
4. run ccleaner
5. run ccleaner registry utility
6. reboot computer in "normal" mode
7. unfold downloaded software to created folder on desktop or root directory, somewhere where yo uwill knowhow to find it easy
8. run software, follow instructions and connect printer when software ask for it.

Hope this will solve your problem :-)

According to Page 46 of the LBT-W5000 Operating Instructions:
"The display stars flashing as soon as you plug in the power cord even though you haven't turned on the system (demonstration mode).
Press DISPLAY (for LBT-W5000 / W300 / XB700 / XB500) or DEMO (STANDBY) (for other models) while the system is off. If the system is in the Power Saving mode, press POWER SAVE / DEMO (STANDBY) (for LBT-W5000 / W300 / XB700 / XB500). The demonstration appears automatically the first time you plug in the power cord, or if there is a power outage lasting longer than half a day."
I tested this today, as my LBT-W5000 was in Demonstration Mode. It definitely works. The only catch is (at least on the W5000), and it's a minor one, you have to reset your clock afterwards.

Go to the settings -> Flight Mode -> Select flight mode -> Then go back to the settings menu -> security setup -> Self Help -> Then change status to off.

You will need a N99 specific network settings for a reset to factory defaults. Ask for it at http://chinamanuals.com

You need a license to use it. Is there one on the cabinet of the computer?