So I've been spending the day trying to install Fedora 25 on my HP Windows 10 laptop, mainly for programming purposes. A few hours ago, I had used a Live USB to make an installation for several hard drive partitions. The installation seemed to progress fine, except the laptop is now unable to boot up at all; the fan activates, the LED lights are on, and the backlight is on, but the laptop is unable to boot. I cannot access the BIOs menu and pressing buttons such as F10 doesn't do anything.
Is there any way to restore the operating systems for my laptop?

If you hard power off, unplug, remove battery, press power button repeatedly for 10 seconds, then put battery back in and plug it back in, when you turn it on does it POST?

You have to hit the function key immediately after startup - before the bootloader get in.
On my HP I use the <Esc> key to bring up a list of PF keys to select from. But you have to be quick. F9 is "Boot Device Options".
Also lists the following URI:
http://support.hp.com/us-en/document/c01442956

Edit: forgot to add, this is F25 and Win10 that was an upgrade from Win7. All works fine with grub as the loader

Thanks a lot for the advice.
The laptop is still unable to boot after a hard reset, and pressing the Escape/F9 keys does nothing.
If it helps, the screen is completely black.
Maybe it's a hardware issue? I hope not...

Did you try flattening the caps as I suggested?

I would say you need to be persistent. As soon as power comes on (i.e. the POST black screen) start tapping the <Esc> key.

ValorStrike,

You first need to disable Secure Boot.

As syg00 has advised, switch on the machine and immediately press the ESC key rapidly several times.

Alternatively, open the Settings charm by pressing (Windows Key + I), click on the Power button, then hold down the Shift key as you click on Restart.

The computer will restart with the Advanced Boot Options screen.

Select Troubleshoot > Advanced Options > UEFI Settings > disable Secure Boot.

Specific instructions for an HP machine:
http://linuxbsdos.com/2016/11/05/dis...250-g5-laptop/

Dual Boot W10 & Fedora 25:
http://linuxbsdos.com/2016/12/01/dua...uefi-firmware/

Did you resize the partitions from Linux? If so you might have corrupted bootloader. I've done that type of thing. It can be fixed.

something else to try is after turning on do a alt-ctl-delete a couple of time

If you think it is a screen problem, you can always check that using an HDMI/VGA output from the laptop.

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