how to restore bios

August 10, 2017 at 06:24:00
Specs: Windows 7
i am install bios software so my bios was flash sir . iam on my laptop my display no use so please help and more information sir please sir
my laptop information:
os : windows 7
name :lenovo
model :b490
problem :bios was flash

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#1
August 10, 2017 at 06:42:13
Hello Hari, on your previous post, you advised:

"i install bios software so my laptop bios was flash so my display was black and don't responce please more information and help me sir"

It is unlikely this is caused by a bios fail.
Furthermore the bios is best left alone unless absolutely necessary.

If nothing AT ALL EVER shows on your lap├Ętop screen, try connecting an external monitor to see if it displays anything.

Good Luck - Keep us posted.


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#2
August 10, 2017 at 21:01:40
The only reason to flash a BIOS is for component compatibility and to resolve an issue that the BIOS update is specifically designed to resolve. Since components cannot be changed on laptops it is very rare for the BIOS to really need to be updated. Updating a BIOS is ALWAYS a risk and should be done only when there is a clear reason to do it.
There is almost never any performance improvement except when there is a component compatibility issue.
You should ONLY get BIOS updates from the system manufacture's site for manufactured units and then only for that exact model.
Flashing a BIOS that fails (whether due to mechanical issue, power issue, faulty RAM issue, or incorrect BIOS) are rarely correctable. If nothing works after an attempt at flashing it then most of the time the motherboard needs to be replaced or if under warranty (and they are very understanding) sent back to the factory.

You have to be a little bit crazy to keep you from going insane.


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#3
August 11, 2017 at 18:14:22
Was the BIOS update successful? Or did it stop for some reason?
Does the laptop power on? Fan turning? POST activity?

A more detailed description what actually happens when you turn on the laptop would help.
We cannot SEE or HEAR what you SEE or HEAR!

message edited by sluc


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