hello all,

I am planning to buy an Acer Aspire AS5750 notebook. Unfortunately, they don't list the bios type in the advertisement specs. I heard bad things about the UEFI bios chip and I don't want MS locking me out because I put linux on the notebook.

There seem to be some misinformations here that need to be clarified.
1. Linux works just fine with UEFI.
2. If you speak from locking out, I assume that you mean the Secure Boot feature. It will not lock you out of Windows, it will rather preventing you from installing unsigned versions of Linux.
3. This laptop comes with Windows 7, which does not support Secure Boot so there should be no problem even if it comes with UEFI.

I appreciate the feedback TobiSGD.

So this means any desktop, notebook or netbook having windows 8 will most likely have the secure boot thing and we have to be careful buying those.

thanks again

To be more specific. If a machine has the "Windows 8 Logo" it has to have UEFI and Secure Boot. That doesn't mean that any Windows 8 machine has to have Secure Boot or UEFI, it is possible to install Windows 8 on machines that don't support those standards.
I would recommend to buy a machine with the logo if you intend to buy a machine that comes with Windows 8, because to get the logo a machine also must have an option to disable Secure Boot (useful on Linux only machines) and also an option to add your own custom keys (useful on Linux only systems that use a signed bootloader and if you want to dual-boot with Windows 8).
Keep in mind that this only applies to x86 hardware, not to ARM machines.

Actually, my intention is to remove the windows OS once I tested the hardware with a liveCD. But to be on the safe side, I will be buying a windows 7 notebook without the secure boot. In my opinion, MS and those OEMs are making this secure boot thing a nuisance.

Thanks again for the extra info.

Don't you do it backwards? Shouldn't you investigate if the machine is fully Linux compatible before buying it, if Linux is the OS that you want to run on it?

It's hard to tell if linux is compatible with the notebbok without testing which is why I said above, I will use a liveCD, preferably Mint. My main criteria that must work with the linux OS is the video card, audio card and ethernet LAN port.

But if there are issues like proprietary components that linux doesn't support, then I keep windows 7 and use linux in a VM. At least, I still have my desktop which is all linux. Anyway, I surely hope linux is compatible with the notebook.