can't enter bios how can i solve?











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I deleted my Ubuntu partition from my Windows 10 drive, but now when I power on the PC, Windows does not start. All I see is "error: unknown filesystem. Entering rescue mode... grub rescue>_", so I thought to change the boot order. However, I can't enter the BIOS screen. Before, I was able to change the boot order by pressing F12, but now if I press it, it does nothing. I can't even enter into the bios with F2 when it says "press F2 to enter bios" and "F12 boot options". I can't see those options anymore.



What could be causing this?










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  • 3




    Windows has fast start up, but UEFI has fast boot. Fast boot assumes you have made no system changes and jumps immediately to booting. That often does not give time to press a key to get into UEFI. Often, just a full cold boot, not warm reboot works. If laptop also remove battery and hold power switch for 10 sec or so, to all power used. If not you may have to remove coin battery on motherboard. askubuntu.com/questions/652966/…
    – oldfred
    Nov 21 at 21:08










  • Sometimes holding down f2 after power-up might work, or typing it rapidly. Without the delay, it can be tricky, but usually possible.
    – ubfan1
    Nov 22 at 3:54










  • Insert your Windows DVD and try to repair disk/boot repair.
    – abu_bua
    yesterday















up vote
0
down vote

favorite












I deleted my Ubuntu partition from my Windows 10 drive, but now when I power on the PC, Windows does not start. All I see is "error: unknown filesystem. Entering rescue mode... grub rescue>_", so I thought to change the boot order. However, I can't enter the BIOS screen. Before, I was able to change the boot order by pressing F12, but now if I press it, it does nothing. I can't even enter into the bios with F2 when it says "press F2 to enter bios" and "F12 boot options". I can't see those options anymore.



What could be causing this?










share|improve this question









New contributor




user402450 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
















  • 3




    Windows has fast start up, but UEFI has fast boot. Fast boot assumes you have made no system changes and jumps immediately to booting. That often does not give time to press a key to get into UEFI. Often, just a full cold boot, not warm reboot works. If laptop also remove battery and hold power switch for 10 sec or so, to all power used. If not you may have to remove coin battery on motherboard. askubuntu.com/questions/652966/…
    – oldfred
    Nov 21 at 21:08










  • Sometimes holding down f2 after power-up might work, or typing it rapidly. Without the delay, it can be tricky, but usually possible.
    – ubfan1
    Nov 22 at 3:54










  • Insert your Windows DVD and try to repair disk/boot repair.
    – abu_bua
    yesterday













up vote
0
down vote

favorite









up vote
0
down vote

favorite











I deleted my Ubuntu partition from my Windows 10 drive, but now when I power on the PC, Windows does not start. All I see is "error: unknown filesystem. Entering rescue mode... grub rescue>_", so I thought to change the boot order. However, I can't enter the BIOS screen. Before, I was able to change the boot order by pressing F12, but now if I press it, it does nothing. I can't even enter into the bios with F2 when it says "press F2 to enter bios" and "F12 boot options". I can't see those options anymore.



What could be causing this?










share|improve this question









New contributor




user402450 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.











I deleted my Ubuntu partition from my Windows 10 drive, but now when I power on the PC, Windows does not start. All I see is "error: unknown filesystem. Entering rescue mode... grub rescue>_", so I thought to change the boot order. However, I can't enter the BIOS screen. Before, I was able to change the boot order by pressing F12, but now if I press it, it does nothing. I can't even enter into the bios with F2 when it says "press F2 to enter bios" and "F12 boot options". I can't see those options anymore.



What could be causing this?







boot dual-boot grub2 windows bios






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edited Nov 22 at 1:09









jramos775

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267






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asked Nov 21 at 20:47









user402450

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1




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  • 3




    Windows has fast start up, but UEFI has fast boot. Fast boot assumes you have made no system changes and jumps immediately to booting. That often does not give time to press a key to get into UEFI. Often, just a full cold boot, not warm reboot works. If laptop also remove battery and hold power switch for 10 sec or so, to all power used. If not you may have to remove coin battery on motherboard. askubuntu.com/questions/652966/…
    – oldfred
    Nov 21 at 21:08










  • Sometimes holding down f2 after power-up might work, or typing it rapidly. Without the delay, it can be tricky, but usually possible.
    – ubfan1
    Nov 22 at 3:54










  • Insert your Windows DVD and try to repair disk/boot repair.
    – abu_bua
    yesterday














  • 3




    Windows has fast start up, but UEFI has fast boot. Fast boot assumes you have made no system changes and jumps immediately to booting. That often does not give time to press a key to get into UEFI. Often, just a full cold boot, not warm reboot works. If laptop also remove battery and hold power switch for 10 sec or so, to all power used. If not you may have to remove coin battery on motherboard. askubuntu.com/questions/652966/…
    – oldfred
    Nov 21 at 21:08










  • Sometimes holding down f2 after power-up might work, or typing it rapidly. Without the delay, it can be tricky, but usually possible.
    – ubfan1
    Nov 22 at 3:54










  • Insert your Windows DVD and try to repair disk/boot repair.
    – abu_bua
    yesterday








3




3




Windows has fast start up, but UEFI has fast boot. Fast boot assumes you have made no system changes and jumps immediately to booting. That often does not give time to press a key to get into UEFI. Often, just a full cold boot, not warm reboot works. If laptop also remove battery and hold power switch for 10 sec or so, to all power used. If not you may have to remove coin battery on motherboard. askubuntu.com/questions/652966/…
– oldfred
Nov 21 at 21:08




Windows has fast start up, but UEFI has fast boot. Fast boot assumes you have made no system changes and jumps immediately to booting. That often does not give time to press a key to get into UEFI. Often, just a full cold boot, not warm reboot works. If laptop also remove battery and hold power switch for 10 sec or so, to all power used. If not you may have to remove coin battery on motherboard. askubuntu.com/questions/652966/…
– oldfred
Nov 21 at 21:08












Sometimes holding down f2 after power-up might work, or typing it rapidly. Without the delay, it can be tricky, but usually possible.
– ubfan1
Nov 22 at 3:54




Sometimes holding down f2 after power-up might work, or typing it rapidly. Without the delay, it can be tricky, but usually possible.
– ubfan1
Nov 22 at 3:54












Insert your Windows DVD and try to repair disk/boot repair.
– abu_bua
yesterday




Insert your Windows DVD and try to repair disk/boot repair.
– abu_bua
yesterday















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