Unknown USB Device ( Device Descriptior Request Failed )

Just a question, what about the Power Supply? How many Watts has it?

CountMike said:

Did you set USB as Legacy type in BIOS ?

Legacy mode is enabled: http://prntscr.com/d8zve2

topgundcp said:

Try resetting the BIOS to default, It might clear up the 'Device Descriptior Request Failed' problem.

I already thought about this, I even changed the BIOS battery a couple of days ago.

Adalwar said:

Just a question, what about the Power Supply? How many Watts has it?

Seasonic G Series 550W [ SASS550RM ]

Use microsoft message analyzer to capture the logs of your usb port when something is plugged. You can see there the details of the problem.

@Rostos,
Nvidia recomends a minimum of 450W psu for the gtx 660.
I would suggest you to remove the nvidia gtx 660 Card from system and use the on-board Intel HD Graphics for a while, just for testing and eliminate a Power Supply issue.

Omidz 10 said:

Use microsoft message analyzer to capture the logs of your usb port when something is plugged. You can see there the details of the problem.

Doing it asap.

adalwar said:

@rostos,
nvidia recomends a minimum of 450W psu for the gtx 660.
I would suggest you to remove the nvidia gtx 660 Card from system and use the on-board Intel hd graphics for a while, just for testing and eliminate a power supply issue.

I will test that too, somehow I do feel that the psu is not strong enough. I disconnected the dvd rom to try to get a small bonus, if that matters, a long time ago.

If the psu will be at fault, then all I have to do is swear at the shop who sold me the pc, I was not limited by budget when I bought it a few years ago and I told them to be careful so the psu is great and supports the configuration and future addons, the cpu is great, etc. They managed to convince me to downgrade from what I wanted initially to buy, they said I won't need that and that.

Rostos said:

i will test that too, somehow i do feel that the psu is not strong enough. i disconnected the dvd rom to try to get a small bonus, if that matters, a long time ago.

psu choice is something difficult, you can not go only by the advertised watts, you need to investigate deep to find out the needs / output in the different lines +3.3,+ 5VSB, +12, -12 and so on. I mean , a cheap 650W will not deliver enough power in some Lines and pc will not work well, in the mains lines you get a lot of power but on side lines it is very poor, not enough for system.

edit: running a too small psu could lead that some hardware gets defective, it can be that your usb controller all already bad. i could not find what nvidia gtx 660 power needs in different Lines, may be you investigate that and compare with label on PSU.