toshiba laptop error codes

I have a toshiba laptop that will not power up.  I have blinking light that, based on internet research, is an error code of A4 (binary code 10100100).

I have not been able to discover what this code represents.

I have just found additional information that indicates the binary code should be reversed, thus giving me a new hex code of 25.
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That is correct, the binary flash code is read from last to first with Long flashes as 1's and short flashes as 0's
so your code should be read as 00100101 and converted to 25h

From Toshiba
25h -->Main battery charge current is more than 0.3A when the battery isn't being charged.

In the case of error code 2Xh: (25h included)

Make sure the battery pack is correctly installed in the computer. If the battery pack is correctly installed, replace the battery pack with a new one.

If the error still exists, the system board or the battery board may be disconnected or damaged. Disassemble the computer and check the connection between the AC adaptor and the system board and connection between the system board and the battery board (if there is one, in my case it was integrated to ths system board).

After checking the connection, perform the following:
Check 1
Replace the AC adaptor with a new one. If the AC adaptor is still not functioning properly, perform Check 2.
Check 2
Use a multimeter to make sure that the F8800 fuse on the System board is not blown. If the fuse is not blown, go to Check 3. If the fuse is blown, go to Check 6.
Check 3
Use a multimeter to make sure that the F1000 fuse on the Battery board is not blown. If the fuse is not blown, go to Check 4. If the fuse is blown, replace the Battery board with a new one following the instructions in Chapter 4.
Check 4
Make sure that the Battery board cables are firmly connected to PJ8820 and PJ8821 on the System board and to PJ1000 and PJ1001 on the battery board. If they are connected firmly, go to Check 5.
Check 5
The Battery board or System board may be damaged. Replace it with a new one following the instructions in Chapter 4.


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