http://i49.tinypic.com/15poark.jpg
I am bit confused.
Which all settings should I tick?
This is for my friend so I don’t want to mess up.
Hi Chris…
You’re right, you don’t want to make a mistake with this! :-\
Before you proceed, is it critical that your friend has his BIOS upgraded, is there something that flashing it would fix? If not, I don’t think it’s worth the chance of turning your friend’s computer into an expensive paperweight or doorstop in less than 30 seconds. I’ve seen this almost happen once with a relative, fortunately the BIOS chip in his particular motherboard could be reflashed properly. Also, what motherboard is this for?
God bless 
He told me that he has problems with his bios.
That his time is getting changed all the time after he tried to FLASH his BIOS by himself ???
He tried putting a new CMOS battery still the problem is there ???
So I went to his Acer PC manufactuers website and downloaded the updated BIOS based on his Acer model
I thought I will flash this new BIOS properly after learning how to flash
Hi Chris…
Does Acer give any recommendations on what settings to choose (from what you have shown in your first post?) Did you look up the motherboard specs independent of Acer’s site? More information on the board, including the BIOS, might be found. 
God bless
Hi Chris,
Ever time I’ve done it, I’ve always read the instructions at least twice.
Then tried to follow them step by step and most importantly,
Prayed a whole lot while I sat and watched the process.
So far, so good.
@ ardvark and bob
That picture is their default settings. I received that picture inside their download.
+1
If you link us through to the Acer downloads page Chris, happy to look over the specs for you.
They don’t have a whole lot in the readme file.
As for the flash, I’d go with this:
Keep all of the “Block Options” Checked.
“CMOS options” select destroy checksum (this should wipe out any current settings in the BIOS, and flash the new BIOS version with all factory defaults). AFTER the flash completes, reboot the computer, enter into the BIOS and make any personal changes that you want (overclocking, password, boot order, etc.).
I’d uncheck “Do not check ROM ID”.
Restart after programming I’d leave checked.
Then, run it and cross your fingers.
However, it does state on their website,
Flashing the wrong BIOS can cause harm to the system. Acer recommends that you should only upgrade your firmware/drivers if you have been instructed to do so by an Acer Customer Care representative. By using these firmware/drivers you agree to accept the possibility of product failure.
So, maybe contacting tech support and asking them what you should do would be a safer bet…
Hi all…
I certainly agree
God bless
I’m not getting a lot through the link Chris. I seem to be drawing blank pages where I need to see specs. I’ve had these kinds of problems with Acer before, even with a state of the art Acer HQ just across the ditch (in Australia). And not that I have any doubts about Acer technology - excellent performers in the Aspire range. Just a bit tricky, that’s all. Very hi-tech you could say.
I also tried emirates, euro, and my local Acer, with once again no joy. I recall this happening before. And its a while since I had an Acer desktop in the house. As far as the Acers go, I would be very careful about ensuring the correct downloads, as you have probably worked out by now. More so than with the other common brands (I would say). Sorry I cannot offer more just yet but I can have a search around during the day if that is any help.
That said, scythe has offered some good advice. Outside of that you could look at this link -
http://support.acer-euro.com/drivers/ftp/ftp.html
Its a Vista link - the readme.txt refers to resources accessible through F6 and Acer Power (for some reason).
The Bios page in the Vista folder draws a blank on my screen. The other pages may be helpful.
The only thing I would add is you should have the computer on a battery backup( UPS). If the power goes out or flickers in the middle of the flash your going to have an expensive brick.
Yes. Chris, I couldn’t see your diagram earlier for some reason, but I see it now. If those are default and with scythe’s pointer and if bios specs match then you are good to go. The component flash if you could call it that is known good.
Thanks for all your advise.
The precise link is
I don’t think this will work in your browser.
Acer - Desktop - Aspire = T660
Yes Chris you seem to be well in control. Happy flashing 
I finished flashing.
In the boot screen it is written CMOS Checksum error and CMOS date/time error.
I changed the dates and started Windows
What is CMOS Checksum error? Is it normal after flashing?
Hi Chris…
If you reboot the system, do you get the same message?
God bless
Yeah, after a reboot, that should go away.
Have a look here for more information, but basically after you flash the BIOS it will check to make sure nothing has changed since the last boot. If something does, it will give you an error. That’s why we’re asking if it goes away after you reboot, because it should stop.
http://www.pcguide.com/ts/x/sys/booterrGBER08-c.html
CMOS checksum errorsExplanation: A checksum is computed as an error-detecting code, to protect the BIOS settings stored in the CMOS memory. Each time the system is booted this number is recomputed and checked against the stored value. If they do not match, an error message is generated to tell you that the CMOS memory contents may have been corrupted and therefore some settings may be wrong. BIOSes react in different ways to encountering this sort of error. Some will warn the user and then continue on with whatever settings were in the CMOS. Others will assume that the settings that were in the CMOS were corrupted and will load default values stored in the BIOS chip “for safety reasons”. The error message will indicate which your system is doing.
Diagnosis: The most common cause of checksum errors in CMOS is a battery that is losing power. Viruses can also affect CMOS settings, and motherboard problems can also affect the stored values.
Recommendation: Follow the instructions in this section to address the CMOS corruption. You should make sure that all of the BIOS settings in the system are correct, by rebooting the system, going into BIOS setup and double-checking all the values (hopefully against a recent BIOS settings backup).
This thing only happened once after I flashed.
So, is this normal to happen once?
Yes and it looks like you’re in good shape. Nice job!
God bless