If i change the BIOS option from IDE to AHCI the pc says auto detecting ahci port... and from that point it's adios computer, the bios is not even accessible anymore at that point, the only way to have it back is putting the battery out of the motherboard and waiting the bios to be back at factory settings.

The main reason to want it is that it struggles to play videos either streaming or pre downloaded, the sound usually stutters like *censored* of even make the pc freeze with a lawnmower sound until pressing and holding the power button to put it out of its misery. I have a 2GB graphic card in (zotac geforce GT 630). 8gb of ram ddr2, a Quad CPU Q9400 processor with 2.66ghz, using Windows 7 64bit, and trying Win 10 right now to see if there would be improvement... I would love to be watching videos flawlessly...Hello, your post is hard to understand.
Have you ever been able to watch videos on this computer without having some kind of issue? Do you have another computer that works better?
It would be helpful if you could supply some more information.What is the make and model of the computer you are using? And what kind of Internet connection do you have?
It seems that you said that even after downloading a video and then you try to play it back you have some difficulty. Is that so?
with plain graphics cards are able to play television quality movies with a high level of RELIABILITY. Therefore your problem seems to be something more than just merely a setting in the BIOS. Many, many users enjoy video on their personal computers without ever having to do anything to the computer.

Please provide additional information.


Why are you changing drive modes to begin with ? ?

Also if you installed Win 10 you need to install ALL component drivers for it...

Lastly there ain't much to improve the performance of that vid card...WELL now i'm trying to install windows 7 on ahci mode in bios, and it HANGS at the starting windows screen

Quote

The Advanced Host CONTROLLER Interface (AHCI) is a technical standard defined by Intel that specifies the operation of Serial ATA (SATA) host bus adapters in a non-implementation-specific manner.

The specification describes a system memory structure for computer hardware vendors to exchange data between host system memory and attached storage devices. AHCI gives software developers and hardware designers a standard method for detecting, configuring, and programming SATA/AHCI adapters. AHCI is separate from the SATA 3 Gbit/s standard, although it exposes SATA's advanced capabilities (such as hot swapping and native command queuing) such that host systems can utilize them.

As of March 2014, the current version of the specification is 1.3.1.