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Old 09-21-2016, 05:41 PM   #1
bianchi77
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Default MSI G45M BIOS question ?

Guys,

I have MSI G45M, the POST is freezed on BIOS splash screen and I can not press DEL to enter BIOS menu, what's wrong with it ?

POST Diagnostic stop at 3838....

Any clues ???
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Old 09-22-2016, 05:44 PM   #2
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Default Re: MSI G45M BIOS question ?

anyone knows ? is it my BIOS chip corrupted or there's a faulty on my I/O (south bridge) ?
Because it can not accept signal from keyboard...
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Old 09-23-2016, 02:00 AM   #3
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Default Re: MSI G45M BIOS question ?

I tried to boot with E2140 CPU....I can see keyboard LEDs are blinking and I can press num lock on and off LED...but it's not responding to DEL key...
Freeze on splash screen, option press "DEL" or "TAB" to see setup or see POST process....
What's wrong with it ? BIOS corrupted or one of the hardware faulty ?
POST 3838....MSI-7521....G45M.....
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Old 09-23-2016, 01:57 PM   #4
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Default Re: MSI G45M BIOS question ?

im gunna have to assume this particular board uses ami bios. because i cant find anything on post code 38 on award bios boards. the bios boot screen is visible, is it not?

anyway, ami bios post code 38 means
Quote:
Initializes different devices through DIM (Device Initialization Manager).
Initialize different buses and perform the following functions: Boot Input Device Initialization (function 3); IPL Device Initialization (function 4); General Device Initialization (function 5). Function 3 searches for and configures PCI input devices and detects if system has standard keyboard controller. Function 4 searches for and configures all PnP and PCI boot devices. Function 5 configures all onboard peripherals that are set to an automatic configuration and configures all remaining PnP and PCI devices.

While control is in the different functions, additional checkpoints are output to port 80h as a word value to identify the routines under execution. The low byte value indicates the main POST Code Checkpoint. The high byte is divided into two nibbles and contains two fields. The details of the high byte of these checkpoints are as follows:
HIGH BYTE XY
The upper nibble 'X' indicates the function number that is being executed. 'X' can be from 0 to 7.
0 = func#0, disable all devices on the BUS concerned.
1 = func#1, static devices initialization on the BUS concerned.
2 = func#2, output device initialization on the BUS concerned.
3 = func#3, input device initialization on the BUS concerned.
4 = func#4, IPL device initialization on the BUS concerned.
5 = func#5, general device initialization on the BUS concerned.
6 = func#6, error reporting for the BUS concerned.
7 = func#7, add-on ROM initialization for all BUSes.
8 = func#8, BBS ROM initialization for all BUSes.
The lower nibble 'Y' indicates the BUS on which the different routines are being executed. 'Y' can be from 0 to 5.
0 = Generic DIM (Device Initialization Manager).
1 = On-board System devices.
2 = ISA devices.
3 = EISA devices.
4 = ISA PnP devices.
5 = PCI devices.
the board is probably hanging trying to detect an onboard device that has failed and which will not respond. could be lan chip, sound chip, usb controller etc. u have to figure it out yourself. u say the keyboard will not respond? could be this part about "Boot Input Device Initialization (function 3)" as mentioned above. if u're using a ps2 keyboard, try a usb keyboard and see what happens; if u're using a usb keyboard, try a ps2 keyboard and see what happens.
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Old 09-23-2016, 06:39 PM   #5
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Default Re: MSI G45M BIOS question ?

I've tested with PS2 keyboard...it's blinking on the start and I can flip "Num lock" LED...
which peripheral chip is failed ? how can I test it ?
I need to see the datasheets on every chip then....
I'll post the BOM of this board later on, may be we can predict which one is the culprit...??
I have the schematic of this board..
Not a problem with southbridge and northbridge I reckon....
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Old 09-25-2016, 10:58 PM   #6
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Default Re: MSI G45M BIOS question ?

Usually which device fail the most?
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Old 09-26-2016, 12:56 AM   #7
bianchi77
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Default Re: MSI G45M BIOS question ?

Is it possible that I got failure on Fintex F71882 LPC SIO ?
Since I can't initialize keyboard properly ?
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Old 09-30-2016, 05:57 PM   #8
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Default Re: MSI G45M BIOS question ?

How do you reckon ? I'm gonna change Super I/O chip...
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Old 09-30-2016, 06:29 PM   #9
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Default Re: MSI G45M BIOS question ?

Quote:
Originally Posted by bianchi77 View Post
I have the schematic of this board..
Post the schematic.
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Old 09-30-2016, 06:59 PM   #10
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Default Re: MSI G45M BIOS question ?

Ok I will do that...I hv the link as well
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Old 09-30-2016, 07:05 PM   #11
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Default Re: MSI G45M BIOS question ?

That's the schematic :
http://elektrotanya.com/msi_ms-7521_.../download.html

any clues ?
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Old 09-30-2016, 08:20 PM   #12
diif
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Default Re: MSI G45M BIOS question ?

Have you tried another keyboard as suggested in post #4?
Cleared the CMOS ?
Have you tried anything ? measured the voltage to the SIO ?
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Old 09-30-2016, 09:37 PM   #13
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Default Re: MSI G45M BIOS question ?

Yes I've done post #4, not a good response, SIO ? super I/O ?
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Old 09-30-2016, 09:38 PM   #14
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Default Re: MSI G45M BIOS question ?

Have you seen the schematic ?
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Old 09-30-2016, 09:47 PM   #15
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Default Re: MSI G45M BIOS question ?

Yes I have.
SIO the IC you mention in post #7 You've measure the voltage going to it on the correct pin. You have searched for the data sheet ? The correct voltage and pin is clearly marked in it.

have you cleared the cmos ?

Last edited by diif; 09-30-2016 at 09:50 PM.. Reason: cmos ?
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Old 09-30-2016, 09:58 PM   #16
bianchi77
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Default Re: MSI G45M BIOS question ?

Yes I have cleared CMOS, the voltage is not right ...
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Old 10-01-2016, 04:38 AM   #17
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Default Re: MSI G45M BIOS question ?

What pin/s did you measure and what voltage did you get ?
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Old 10-02-2016, 07:59 PM   #18
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Default Re: MSI G45M BIOS question ?

it's 5V on pin4 (VCC 3)
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Old 06-27-2017, 02:38 AM   #19
bianchi77
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Default Re: MSI G45M BIOS question ?

I can not continue POST,
It can display message on VGA
TAB to see POST and DEL for setup,
but no response when I pressed keyboard, either USB or PS2 keyboard,
What do you reckon failure here ?
Could it be keyboard controller ? or there's no power supply to it ? thanks
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