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BIOS Revisited

By gbrownlee ·
What sort of changes would you make to a BIOS, that is currently set at defaults, to improve performance?

Thank You

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by ysamala In reply to BIOS Revisited

start ur computer and go to bios features by pressing F2 or Del.Slect boot options and select quick boot.It decreases the boot time taken.
Good Luck

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by gbrownlee In reply to

Poster rated this answer.
Hello: Thankyou for your answer. My BIOS was already set to fast boot, so your answer didn't help me in this instance; but is appreciated!


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by sgt_shultz In reply to BIOS Revisited

oh boy, can't wait to see what charles says. i would like to post more points for you also so you can keep asking these great questions.
my 2 cents is, depends on the BIOS (which means depends on the mboard). if you are not seeing anything in your BIOS that looks like it will affect performance, maybe you don't have any settings in your BIOS that will...
i ususally look for fast boot option or don't check RAM at boot up so goes faster. i also turn off any BIOS level virus protection i find. you might be able to overclock your processor in the BIOS (bet this is not what you had in mind)
you can allocate more RAM to video if onboard video shares system RAM...

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by gbrownlee In reply to

Poster rated this answer.
Hello: What I like most about your answers is that they are so darn practical. Keep up the good work! It is appreciated.


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by TheChas In reply to BIOS Revisited


As different BIOS's have slightly different structure and nomenclature, I will try to keep my answer generic.

First, changes to speed up the boot process.

Start on the drive setup page.

Set all unused drive channels from auto to none / disable.

Verify that the proper DMA mode is set for each connected drive.

On the advanced settings page, consider setting the boot sequence to hard drive first.

Set report floppy drives to Windows to disable.

Change POST / memory test to fast / quick.

For newer systems where the CPU speed is set in BIOS, make sure that the selected CPU speed is correct.

On SDRAM motherboards, make sure that the RAM speed is set correctly.
If the CPU has a 100 MHz front side bus speed, and you have installed PC133 SDRAM, set RAM speed to FSB + PCI (33MHz)
If the CPU has a 133 MHz FSB, make sure that you have PC133 SDRAM, and set the RAM speed to FSB.

Integrated peripherals:
Set ALL ports that you do NOT use to disable.
COMM, Parallel, USB
Not only will this speed up the POST process, it will free up system resources.
CAUTION: Before disabling ports in BIOS setup, boot into Windows, enter device manager and remove the ports from there first!!!!
This will prevent Windows from having a problem with missing hardware.

If you have on board video with shared RAM, you need to balance video RAM with RAM available for the system.

With less than 128MB of RAM, keep video RAM to under 10% of RAM.
With more than 128MB, increase video RAM to the maximum setting, but not more than 20% of total RAM.

If you have an AGP graphics card, set the AGP aperture to at least 2 times video RAM, but not more than 1/2 of system RAM.


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by TheChas In reply to

Unless you clearly understand RAM timing issues, leave the RAM settings alone.

If your CPU supports it, make sure that both internal and external cache are enabled.

If using a parallel port, make sure that the mode is set correctly for your printer or scanner. Usually ECP / EPP mode.

Power Management:
For Windows 98 and newer you may need to enable APM / ACPI in order for Windows to be able to shut down the PC rather than displaying the "It is safe to turn of your computer" message.

You may need to enable power management to be able to turn off the PC using the power button.
(I usually set the power button function to the 5 second delay option.)

For security, disable ALL Wake-On events that you do not use.

For most systems, set the system state after power restore to Off.

This is just off the top of my head.
There may be specific additional settings for some motherboards.


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by gbrownlee In reply to

Poster rated this answer.

Thank you for your definative answer. I am learning from text books and I appreciate your illuminating some of the murkier areas of my education. Also, thank you for the "grub stake". I assume points don't mean that much to you, but I shall return them as soon as I build up some of my own.

Keep up the good work!


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by gbrownlee In reply to BIOS Revisited

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