How to find BIOS problem

Toshiba Satellite l655d-s5055 notebook
April 23, 2012 at 22:59:45
Specs: win 7, core 2 duo / 2 gb
How to find BIOS problem in laptop.
how we find bios failure and how to repair that bios.

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#1
April 24, 2012 at 00:27:01
Depends on what you mean by 'failure'. If the bios is actually corrupted you can try to flash it either to the same or a newer version. If you're having some other problem with it then please post back with specifics.

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#2
April 24, 2012 at 13:30:18
A bios almost never fails as such. It could be that you have some setting wrong.

We don't know what you are asking either.

Text, talk, drive...CRASH.

Hang up and drive @#$%^^


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#3
April 24, 2012 at 13:45:34
To answer your question,

You would de-solder your CMOS from your mainboard, connect it to a EEPROM reader, dump the BIOS, then do a hash check against a the original BIOS file.

But I seriously doubt this is what you want to know.


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Related Solutions

#4
April 24, 2012 at 14:13:09
Explain why you think you have a BIOS problem.

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#5
April 24, 2012 at 15:59:52
You would de-solder your CMOS from your mainboard, connect it to a EEPROM reader,

You wouldn't. CMOS and BIOS are two completely different things. The CMOS memory is written to every time you press save in the BIOS. It is corrupted CMOS memory that causes the CMOS Check Sum Error and is easily rectified

But as Jefro says, it is extremely unlike the BIOS is courrputed. It is Read Only Memory which is very hard to corrupt while the CMOS is Random Access Memory which can be read from and written and is is easily corrupted. A battery failure will corrupt CMOS memory.

In modern computer the CMOS and BIOS are usually contained in the same chip but they are different things.

Stuart


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#6
April 24, 2012 at 16:11:28
And they are in a socket on a modern board.

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#7
April 24, 2012 at 16:14:13
CMOS
(Complementary Metal Oxide Semiconductor) Pronounced "c-moss." The most widely used integrated circuit design. It is found in almost every electronic product from handheld devices to mainframes. CMOS uses PMOS and NMOS transistors wired together in a balanced fashion that causes less power to be used than NMOS or PMOS transistors by themselves. The first transistors were bipolar, which are still used when higher power is required. CMOS and bipolar are also used in combination for many applications. See MOSFET, FET and bipolar transistor. See also CMOS memory.

BIOS (bs)
n.
The set of routines stored in read-only memory that enable a computer to start the operating system and to communicate with the various devices in the system, such as disk drives, keyboard, monitor, printer, and communications ports.
[b(asic) i(nput/)o(utput) s(ystem).]


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#8
April 24, 2012 at 18:20:36
So you see Gretti, from your own information connecting CMOS memory to an EEPROM reader would be a futile exercise. For your information the CPU that makes the whole thing work also uses CMOS technology.


Or to put it another way; BIOS is a noun, CMOS is an adjective.

Stuart


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#9
April 24, 2012 at 20:13:12
I understand the terminology and the technology. When the CMOS started getting integrated into the EEPROM and physically being on one chip, acronyms get intertwined.

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#10
April 25, 2012 at 06:06:18
Now back to the OPs issue. I am guessing the issue is the OP doesn't know how to access the BIOS/CMOS screens.

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