I have satellite c650 no power up even on mother board... can anybody suggest what is the best way to do...

according to the maker there is no C555t
a c55t-1234 (note the vast submodels not stated by you....1233 is m fact sub number what is yours?
but is kinda off topic but gee, wrong model stated out of the gate.
Ok what update is running, we cant see your screen
1: tell all words on screen and logo's
2: post photo of failing screen

sorry we can not guess WHAT is updating
good luck. for sure.

How about the battery itself and the battery charger? Have you tested them?

If you don't have the experience on disassembly the Toshiba Satellite c650 c655 laptop, we suggest you refer to the official maintenance manual firstly if you have. Here we provide a universal instruction for the reference, some steps may be not the same. If you need a detailed guide or manual, please contact us, we will email you if we have.
1. Please turn off your Toshiba Satellite c650 c655 laptop, disconnect the power adapter and remove the toshiba satellite c650 c655 battery.
2. Turn the laptop over. Remove the screws (may not exist) that hold the Toshiba Satellite c650 c655 hinges on the back of the computer.
3. Remove all the screws (may not exist) that hold the keyboard and keyboard bezel in place, then gently pry keyboard bezel using a flat head screwdriver. Lift the keyboard and unplug the keyboard cable from the motherboard to remove the keyboard. Now, you will see the toshiba c650 c655 laptop fan
4. Detach both hinge covers using your fingers. Unscrew the screws securing the Toshiba Satellite c650 c655 hinges to the laptop base.
5. Locate the screws on the LCD, pry the rubber screw seals using a flat-head screwdriver. Unscrew the screws attached under the seals. Remove the screen bezel.
6. Remove the screws securing the hinges d to the Toshiba Satellite c650 c655 LCD.
7. Now, you can remove the old Toshiba Satellite c650 c655 Hinges by sliding them out. Insert the new hinges in their correct place. Reverse the above procedure to assemble the laptop.

Pictorial disassembly guide for the Toshiba Satellite C655 and C650 series of Notebook PCs,

http://www.irisvista.com/tech/laptops/Toshiba-Satellite-C650-C655/disassemble-toshiba-laptop-1.htm

You can click on each photo one at a time, to enlarge.

Advisement:

1) Observe Anti-Static Precautions
Your body carries Static electricity. Static WILL fry out (Short Circuit) the delicate hardware components inside a computer.

I suggest you buy, and wear an ESD wrist strap, and connect it's alligator clip to a good ground source.
Example of an ESD wrist strap,

http://www.radioshack.com/product/index.jsp?productId=2103245

I connect to an unpainted surface, of the metal frame of an empty desktop computer case.
If your table you're working on has metal legs, connect to an unpainted surface on one of them.

Barring none of the above applies, at least place a large metallic unpainted object on the table, and connect to it.
Perhaps a metal serving tray, or metal (Unpainted) knickknack.

2) Use a multi-compartment container for the various screws you will remove.
Label each compartment for the area the screw/s come out of.
If no multi-compartment container is available, use a clean egg carton.
label each egg holder.

Some screws look VERY similar to other screws.
Do Not mix them up.


What do you mean by reset motherboard? If your thinking is that you are going to remove the CMOS battery for a while, then reinstall it to clear a BIOS password, this = no.

There is a capacitor on the motherboard which keeps enough residual power, so that the BIOS password stays in play, even with the CMOS battery removed.

(The CMOS battery is referred to as the RTC Battery. Real Time Clock battery.
As soon as the Keyboard is removed, it is right there on the motherboard. Uses the same battery holder as a desktop computer, and it looks to be a CR2032, just like a desktop CMOS battery )

There are two pads which are shorted across briefly, with a small flat tip screwdriver.
Usually rectangular in shape, and each approximately the size of a BB.
This drains the residual power from the capacitor.

Location? Dunno
Generally under a small piece of Mylar plastic sheet, and sometimes under the Ram Memory modules, or under the wireless module.

Also, this link has a free Service Manual,

http://www.tim.id.au/blog/tims-laptop-service-manuals/#toc-toshiba

Under the Toshiba main heading scroll down to the subheading that begins with -
Satellite A10.
Go to the second line in this 'paragraph', and scroll across to C650.
Left-click on C650.
(You may also want to take a look at C655D)

After you click on the file name C650, it may take up to 30 seconds before the first page comes up.
It may also take additional time for the file to fully download.

Regards,
joecoolvette

To reset the BIOS read the information from this link.

In case of your Toshiba laptop the easiest method would be using software from Hiren's Boot CD as it's pretty hard to open it up and reach for the CMOS battery or the jumper.

Hello,

check the power adapter if its still working.

If the power adapter is still working, then the fault is from the laptop.

The laptop is having a power problem from the mother board.

I don't think this is a fault you can fix your self. I would advice you take it to a technician to fix the problem.

I wish you the best of luck.

next to the F1 key and the windows key (2nd upper key and second to last key) are two screws, usually under some covering. unscrew and lift top edge of the keyboard towards the trackpad to lay face down. Undo the wire ribbon by lifting the grey or brown tabs and remove ribbon and keyboard. Then install the new keyboard by inserting the ribbon on the place. Lock down with the tabs and put the plastic prongs (close to the space bar) into the laptop body first, and then close keyboard onto the final position. screw back in and thats all. [email protected] for any additional questions.

keep the oil topped up when it knocks,or get valves adjusted

press and hold fn and press f11.it sounds like you activated the sticky keys