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Acer Aspire 5738zg VT-x Bios Mod
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(09-25-2011, 07:02 AM)meonlineonmess Wrote: (09-25-2011, 06:43 AM)kizwan Wrote: The modified BIOS is safe. I will never upload faulty BIOS. However, when dealing with BIOS there is always risk involved. The unlocked options depend on the hardware compatibility. For example, FAN options most probably won't work because FAN on notebooks usually implemented using different method & controlled by BIOS in different way. Anyway, only change the options you familiar with. The VT-x will work with VT-x capable processor. Just make sure the processor support VT-x & 64-bit.
Ok,I will reply next week when I will change the cpu.
So I changed the cpu and vt-x is working with the original bios also, I think all the options were set to enable automatically even if they are not seen.I have an issue with the new cpu it gets hot around 70 degrees when full loaded and I think it is not ok. I undervolted it and the temp got normal.
My question is, are there options in bios to undervolt cpu?so that I don`t have to use software undervolting programs?
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09-28-2011, 07:06 PM
(This post was last modified: 09-28-2011, 07:20 PM by kizwan.)
(09-28-2011, 02:15 PM)meonlineonmess Wrote: So I changed the cpu and vt-x is working with the original bios also, I think all the options were set to enable automatically even if they are not seen. In the BIOS there is a table which contains default settings. If the default setting for VT-x is enabled, it means it enabled by default. In Aspire 5738 BIOS, VT-x is enabled by default. So, when you put VT-x capable CPU, VT-x will work out-of-the-box. All options are not enabled automatically. It depend on the default value set in the BIOS.
Sorry, there are no options for undervolting CPU in the BIOS. 70 Celsius when full load is not bad actually. Heatsink on notebook did not put enough pressure for some thermal paste to perform best. So, I recommend Shin-Etsu thermal paste if you haven't tried it yet.
Did you check out the "dual-IDA" mode? The modified BIOS have unlocked EIST. With unlocked EIST & Intel Dynamic Acceleration (IDA) capable CPU, you can enabled IDA on both cores (hence the name "dual-IDA").
If you use my modified BIOS image & you like it, please consider making a donation. Thank you very much. 
Donate Here
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(09-28-2011, 07:06 PM)kizwan Wrote: (09-28-2011, 02:15 PM)meonlineonmess Wrote: So I changed the cpu and vt-x is working with the original bios also, I think all the options were set to enable automatically even if they are not seen. In the BIOS there is a table which contains default settings. If the default setting for VT-x is enabled, it means it enabled by default. In Aspire 5738 BIOS, VT-x is enabled by default. So, when you put VT-x capable CPU, VT-x will work out-of-the-box. All options are not enabled automatically. It depend on the default value set in the BIOS.
Sorry, there are no options for undervolting CPU in the BIOS. 70 Celsius when full load is not bad actually. Heatsink on notebook did not put enough pressure for some thermal paste to perform best. So, I recommend Shin-Etsu thermal paste if you haven't tried it yet.
Did you check out the "dual-IDA" mode? The modified BIOS have unlocked EIST. With unlocked EIST & Intel Dynamic Acceleration (IDA) capable CPU, you can enabled IDA on both cores (hence the name "dual-IDA").
Hello,I looked for dual ida mode in bios also looked for eist but I did not see these options.
I have Right Mark cpu utility on windows and here I have undervolting options and ida but it is for windows not bios but it works.My cpu temp went down ~15 degrees.
Now I have 36 on core 0 and 44 on core 1.
Bios options for undervolting would be great,but if it is not possible, this is it.I heard about DSDT in ACPI table which could undervolt cpu and requires bios editing.Is this true or did I misunderstood?
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09-29-2011, 10:27 AM
(This post was last modified: 09-29-2011, 10:29 AM by kizwan.)
(09-29-2011, 09:17 AM)meonlineonmess Wrote: Hello,I looked for dual ida mode in bios also looked for eist but I did not see these options.
I have Right Mark cpu utility on windows and here I have undervolting options and ida but it is for windows not bios but it works. It is not EIST option. The BIOS have EIST lock bit which basically prevent you from enabling/disabling EIST in OS. What I did is patched the EIST lock bit so that it is unlocked. When EIST is unlocked, you can enabled/disabled EIST in windows. Also when EIST is unlocked you can enable dual-IDA - which mean IDA on both cores. The option in Right Mark cpu utility must be IDA, not dual-IDA. You can enable dual-IDA using an application called ThrottleStop. This only possible with IDA capable processor.
(09-29-2011, 09:17 AM)meonlineonmess Wrote: Bios options for undervolting would be great,but if it is not possible, this is it.I heard about DSDT in ACPI table which could undervolt cpu and requires bios editing.Is this true or did I misunderstood? Yes it is true. However, when you do this mod, the DSDT won't be able to reintegrate in the BIOS because the size become bigger. The only solution is to override DSDT by loading the modified DSDT in registry for windows. If linux, will need to use DSDT override method. Please read here to understand what involves (under _PSS): http://forum.notebookreview.com/7075297-post1428.html
If you use my modified BIOS image & you like it, please consider making a donation. Thank you very much.
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02-08-2012, 07:05 PM
(This post was last modified: 02-08-2012, 07:07 PM by Jeroen.)
Hi, i am trying to set my timings on my Aspire 5738pg, i flashed the bios with your MOD that gives allot of more options in the bios but still no option to set the timings.
I saw people talking about advanced settings in main but i dont have that.
Any idea what to do? because my ram clock is way wrong.
Thnx for the awesome work Kizwan.
Cheers,
Jeroen
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12-11-2012, 06:09 AM
(This post was last modified: 12-11-2012, 06:11 AM by gouthamdevaraju.)
can you please tell me the procedure how to do it? 
please tell me the procedure how to do it
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I had the similar problem with Wireless not working (looked disabled, couldnt enable using button) on 5738z. I've resolved it by setting to auto all devices (PCE cards or how is it called).
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07-31-2013, 02:56 PM
(This post was last modified: 07-31-2013, 03:02 PM by mbexotikplanet.)
I have problem in acer 5738, once mounted the processor intel core duo t7500 the bios can not find the microcode and I have to press f1 .. is a problem that someone can solve it? help me : Huh: (sorry for the English but are Swiss)
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Hi. I have a laptop Acer Aspire 5738zg. I changed it to the P8600 processor that supports Intel ® (VT-x). Established a modified BIOS Aspire 5738G BIOS_1.34 EIST MOD.rar INTEL in the BIOS menu appears, virtualization technology option - Enabled, but the program ConfigInfo.exe in windows (XP 32) shows that virtualization is available but not included. How to fix it?
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