Some motherboards/bios setups will do that when USB printers and such are connected and turned on. If that's the situation here, then you might try browsing the BIOS for an item called ?Legacy Support?, then disable/turn it off. then save your changes - reboot. After rebooting into windows, plug in your USB device, then with it plugged in, reboot - it should work fine.This is a fix for many usb devices especially printers which contain on-board computers.
Hope this helps.
I started building my own PC a few days ago but I ran across this weird problem where when I turned on the system it would get stuck on the BIOS splash screen. I'm not sure if that's what it's called, but it's the screen that just has a picture that says GIGABYTE and then gives you the options of hitting del, f12, tab, etc. After a few seconds of being on this screen, the motherboard (I guess) would just reset itself, taking the screen to black and then starting up again. If I try to hit anything on the keyboard to advance, it doesn't actually do anything. I've tried three different keyboards.
I can't figure out why this is happening and I took it my local computer guy and he said I should replace the mobo. This is after he swapped out my parts for stuff he had lying around to try and isolate the problem. I got the new mobo in today, and after putting everything in again I'm having the same problem on startup. Has anyone experienced anything like this before? I want to maybe replace the CPU but I'm not even sure if that's the problem, plus I have to find the proper packaging or else Newegg won't even replace my part. If anyone can help, that would be great. Thanks in advance. I'm going to list most of my parts below in case this is a compatibility issue, which I don't think it is.
Mobo: MB GIGABYTE GA-EP45-UD3L 775 P45 RT
CPU: CPU Intel Core 2 Duo E8400 3G 775 45N R
Video Card: VGA XFX | HD-477A-YDFC HD4770 R
RAM: 2Gx2 OCZ OCZ2P10664GK R
Hard Drive: WD Caviar Blue 500 GB
CD/DVD: Samsung something or other