[solved] No access to BIOS, but Windows partition boots without any problem

[steved]

Hi guys,


I'm facing a problem with my PC right now. As I wanted to boot my BackTrack USB I noticed that my BIOS couldn't boot it. The reason is that I cannot access the BIOS settings and everytime I try to boot onto anything, a black screen shows up. The strange part is, that PC loads up the Windows partition without any problem, but as soon as I boot anything else but Windows, it doesnt work. What might the problem be?


My Motherboard : GA-Z77-D3SH


Thanks

[Getherer]

We need some more information.


What PC brand is it?
(I've heard of a situiation in which somebody had to hold F2 (bios) BEFORE he even powered the computer... that was Toshiba)
Did you buy this PC stock with preinstalled Windows?
Or have you ever changed your OS?
Have you ever had access to BIOS?
If so, was booting from USB set as a first priority?
Have you tried to remove CMOS battery?
Have you ever replaced any of the stock hardware?

And in the meantime, try this:

http://www.howtogeek.com/howto/16822/boot-from-a-usb-drive-even-if-your-bios-wont-let-you/

[steved]

Hi,

It has no brand because I built it myself. It has always been working, and for some reason it stopped "working" after installing Linux Ubuntu as a Dualboot. After removing it, I had no access to the BIOS settings. Whatever key I press, it leads me directly to a blackscreen. No, pressing at all, leads me to windows 8 x64. I tried to remove the connected SSD and HDD, to force the booting of the USB, but nothing.  It looks like, he's either getting windows or it doesn't want anything else . The strange thing is, how can the BIOS boot into my windows partition without any problem, and for the rest none...
Thanks anyway.

[proxx]

Have you tried a different monitor or use the on-board video card?

[steved]

I've always had the same video card - GTX 670. I haven't changed anything on the hardware since I've built it. The only difference is that I added a second monitor to the PC, but this can't be the reason because I didn't tweaked anything, I just plugged it into the second video entry of the video card.

[proxx]

I've always had the same video card - GTX 670. I haven't changed anything on the hardware since I've built it. The only difference is that I added a second monitor to the PC, but this can't be the reason because I didn't tweaked anything, I just plugged it into the second video entry of the video card.

Yes but did you try what I said?
You asked for help , its a pretty common issue you know.
Seen plenty of HDMI monitors stuff that didnt work in bios with plugged GPU's
You say have a black screen , that might aswel be the bios your looking at.
Blowing it off with the reason; "it always worked" is not gonna cut it.

Try it on the on-board monitor input and perhaps a different monitor.

[steved]

I tried a few minutes ago and it worked, you were right about the problem coming from the monitor. I had a quiet old monitor plugged in to run some tests and I didn't know that a monitor could cause such a thing many thanks for your advice

[techb]

[SOLVED]

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