Super User Asked on December 16, 2021
When I boot my computer, it boots fine.
When I restart it though, I get the following error:
An operating system wasn’t found. Try disconnecting any drives that don’t contain an operating system.
Press Ctrl+Alt+Del to restart
My BIOS is recently updated. The error happened before the update still.
I am running Windows 8.1 x64.
My computer specification is as follows. I have put what I hope to be the relevant information nearest to the top.
Motherboard
Name ASUS M5A97 EVO R2.0
BIOS
Name To be filled by O.E.M.
Description 2005
Vendor American Megatrends Inc.
Version 2005
Date 20130916
Harddisk 0
Name WDC WD5001AALS-00L3B2
Description Disk drive
Vendor (Standard disk drives)
Capacity 476938 MB
Interface Type SATA
Serial Number WD-WMASZ0136444
Firmware Revision 01.03B01
Model Number WDC WD5001AALS-00L3B2
Removable false
Support DMA true
Support LBA true
Support SATA true
SATA Generation Gen 2
Sector Total 268435455
Maximum Queue Depth 31
Highest Supported ATA Version 8
Security Supported true
Security Enabled false
Security Locked false
Security Frozen true
Security Count Expired false
Security Enchanced true
Harddisk 1
Name WDC WD10EZEX-00KUWA0
Description Disk drive
Vendor (Standard disk drives)
Capacity 953867 MB
Interface Type SATA
Serial Number WD-WCC1S4545930
Firmware Revision 15.01H15
Model Number WDC WD10EZEX-00KUWA0
Removable false
Support DMA true
Support LBA true
Support SATA true
SATA Generation Gen 3
Sector Total 268435455
Maximum Queue Depth 31
Highest Supported ATA Version 8
Security Supported true
Security Enabled false
Security Locked false
Security Frozen true
Security Count Expired false
Security Enchanced true
CPU 0
Name AMD FX(tm)-8350 Eight-Core Processor
Description Family 15-6 Model 2-0 Stepping 0
Vendor AuthenticAMD
Max Frequency 6300 MHz
Start Voltage 1.1625 V
Min Voltage 0.0125 V
Max Voltage 1.55 V
Max Ramp Voltage 0 V
Max Multiplier 31.5 X
Start Multiplier 5 X
L1 Data Cache Size 16 KB
L1 Data Cache Associativity 4
L1 Data Cache Lines 1
L1 Data Cache Line Size 64 Bytes
L1 Instruction Cache Size 64 KB
L1 Instruction Cache Associativity 2
L1 Instruction Cache Lines 1
L1 Instruction Cache Line Size 64 Bytes
L2 Cache Size 2048 KB
L2 Cache Associativity 16
L2 Cache Lines 1
L2 Cache Line Size 64 Bytes
CPU 1
Name AMD FX(tm)-8350 Eight-Core Processor
Description Family 15-6 Model 2-0 Stepping 0
Vendor AuthenticAMD
Max Frequency 6300 MHz
Start Voltage 1.1625 V
Min Voltage 0.0125 V
Max Voltage 1.55 V
Max Ramp Voltage 0 V
Max Multiplier 31.5 X
Start Multiplier 5 X
L1 Data Cache Size 16 KB
L1 Data Cache Associativity 4
L1 Data Cache Lines 1
L1 Data Cache Line Size 64 Bytes
L1 Instruction Cache Size 64 KB
L1 Instruction Cache Associativity 2
L1 Instruction Cache Lines 1
L1 Instruction Cache Line Size 64 Bytes
L2 Cache Size 2048 KB
L2 Cache Associativity 16
L2 Cache Lines 1
L2 Cache Line Size 64 Bytes
CPU 2
Name AMD FX(tm)-8350 Eight-Core Processor
Description Family 15-6 Model 2-0 Stepping 0
Vendor AuthenticAMD
Max Frequency 6300 MHz
Start Voltage 1.1625 V
Min Voltage 0.0125 V
Max Voltage 1.55 V
Max Ramp Voltage 0 V
Max Multiplier 31.5 X
Start Multiplier 5 X
L1 Data Cache Size 16 KB
L1 Data Cache Associativity 4
L1 Data Cache Lines 1
L1 Data Cache Line Size 64 Bytes
L1 Instruction Cache Size 64 KB
L1 Instruction Cache Associativity 2
L1 Instruction Cache Lines 1
L1 Instruction Cache Line Size 64 Bytes
L2 Cache Size 2048 KB
L2 Cache Associativity 16
L2 Cache Lines 1
L2 Cache Line Size 64 Bytes
CPU 3
Name AMD FX(tm)-8350 Eight-Core Processor
Description Family 15-6 Model 2-0 Stepping 0
Vendor AuthenticAMD
Max Frequency 6300 MHz
Start Voltage 1.1625 V
Min Voltage 0.0125 V
Max Voltage 1.55 V
Max Ramp Voltage 0 V
Max Multiplier 31.5 X
Start Multiplier 5 X
L1 Data Cache Size 16 KB
L1 Data Cache Associativity 4
L1 Data Cache Lines 1
L1 Data Cache Line Size 64 Bytes
L1 Instruction Cache Size 64 KB
L1 Instruction Cache Associativity 2
L1 Instruction Cache Lines 1
L1 Instruction Cache Line Size 64 Bytes
L2 Cache Size 2048 KB
L2 Cache Associativity 16
L2 Cache Lines 1
L2 Cache Line Size 64 Bytes
CPU 4
Name AMD FX(tm)-8350 Eight-Core Processor
Description Family 15-6 Model 2-0 Stepping 0
Vendor AuthenticAMD
Max Frequency 6300 MHz
Start Voltage 1.1625 V
Min Voltage 0.0125 V
Max Voltage 1.55 V
Max Ramp Voltage 0 V
Max Multiplier 31.5 X
Start Multiplier 5 X
L1 Data Cache Size 16 KB
L1 Data Cache Associativity 4
L1 Data Cache Lines 1
L1 Data Cache Line Size 64 Bytes
L1 Instruction Cache Size 64 KB
L1 Instruction Cache Associativity 2
L1 Instruction Cache Lines 1
L1 Instruction Cache Line Size 64 Bytes
L2 Cache Size 2048 KB
L2 Cache Associativity 16
L2 Cache Lines 1
L2 Cache Line Size 64 Bytes
CPU 5
Name AMD FX(tm)-8350 Eight-Core Processor
Description Family 15-6 Model 2-0 Stepping 0
Vendor AuthenticAMD
Max Frequency 6300 MHz
Start Voltage 1.1625 V
Min Voltage 0.0125 V
Max Voltage 1.55 V
Max Ramp Voltage 0 V
Max Multiplier 31.5 X
Start Multiplier 5 X
L1 Data Cache Size 16 KB
L1 Data Cache Associativity 4
L1 Data Cache Lines 1
L1 Data Cache Line Size 64 Bytes
L1 Instruction Cache Size 64 KB
L1 Instruction Cache Associativity 2
L1 Instruction Cache Lines 1
L1 Instruction Cache Line Size 64 Bytes
L2 Cache Size 2048 KB
L2 Cache Associativity 16
L2 Cache Lines 1
L2 Cache Line Size 64 Bytes
CPU 6
Name AMD FX(tm)-8350 Eight-Core Processor
Description Family 15-6 Model 2-0 Stepping 0
Vendor AuthenticAMD
Max Frequency 6300 MHz
Start Voltage 1.1625 V
Min Voltage 0.0125 V
Max Voltage 1.55 V
Max Ramp Voltage 0 V
Max Multiplier 31.5 X
Start Multiplier 5 X
L1 Data Cache Size 16 KB
L1 Data Cache Associativity 4
L1 Data Cache Lines 1
L1 Data Cache Line Size 64 Bytes
L1 Instruction Cache Size 64 KB
L1 Instruction Cache Associativity 2
L1 Instruction Cache Lines 1
L1 Instruction Cache Line Size 64 Bytes
L2 Cache Size 2048 KB
L2 Cache Associativity 16
L2 Cache Lines 1
L2 Cache Line Size 64 Bytes
CPU 7
Name AMD FX(tm)-8350 Eight-Core Processor
Description Family 15-6 Model 2-0 Stepping 0
Vendor AuthenticAMD
Max Frequency 6300 MHz
Start Voltage 1.1625 V
Min Voltage 0.0125 V
Max Voltage 1.55 V
Max Ramp Voltage 0 V
Max Multiplier 31.5 X
Start Multiplier 5 X
L1 Data Cache Size 16 KB
L1 Data Cache Associativity 4
L1 Data Cache Lines 1
L1 Data Cache Line Size 64 Bytes
L1 Instruction Cache Size 64 KB
L1 Instruction Cache Associativity 2
L1 Instruction Cache Lines 1
L1 Instruction Cache Line Size 64 Bytes
L2 Cache Size 2048 KB
L2 Cache Associativity 16
L2 Cache Lines 1
L2 Cache Line Size 64 Bytes
HTLink 0
HT0 Multiplier 11 X
HT0 Width In 16 bits
HT0 Width Out 16 bits
HT0 Max Width In 16 bits
HT0 Max Width Out 16 bits
HT1 Multiplier 1 X
HT1 Width In 8 bits
HT1 Width Out 8 bits
HT1 Max Width In 8 bits
HT1 Max Width Out 8 bits
HT2 Multiplier 1 X
HT2 Width In 8 bits
HT2 Width Out 8 bits
HT2 Max Width In 8 bits
HT2 Max Width Out 8 bits
HT3 Multiplier 1 X
HT3 Width In 8 bits
HT3 Width Out 8 bits
HT3 Max Width In 8 bits
HT3 Max Width Out 8 bits
Memory 0
Name Physical Memory 0
Description
Vendor Team Group Inc.
Capacity 8192 MB
Max Bandwidth 10.7 GB/s
Part Number Vulcan-1600
Serial Number 0
Data Width 64 bits
Bus Frequency 685.714 MHz
Slot Location Slot 2
Memory 1
Name Physical Memory 1
Description
Vendor Team Group Inc.
Capacity 8192 MB
Max Bandwidth 10.7 GB/s
Part Number Vulcan-1600
Serial Number 0
Data Width 64 bits
Bus Frequency 685.714 MHz
Slot Location Slot 3
Monitor 0
Name Generic PnP Monitor
Description Generic PnP Monitor
Vendor (Standard monitor types)
Screen Width 1600 pixels
Screen Height 900 pixels
Max Width 1600 pixels
Max Height 900 pixels
Refresh Rate 0 Hz
Pixels Per XLogical Inch 96 pixels
Pixels Per YLogical Inch 96 pixels
USB Controller 0
Name EHCI USB Controller
Description EHCI USB Controller
Vendor AuthenticAMD
USB Controller 1
Name EHCI USB Controller
Description EHCI USB Controller
Vendor AuthenticAMD
USB Controller 2
Name EHCI USB Controller
Description EHCI USB Controller
Vendor AuthenticAMD
USB Controller 3
Name OHCI USB Controller
Description OHCI USB Controller
Vendor AuthenticAMD
Enhanced (101- or 102-key)
USB Controller 4
Name OHCI USB Controller
Description OHCI USB Controller
Vendor AuthenticAMD
USB Controller 5
Name OHCI USB Controller
Description OHCI USB Controller
Vendor AuthenticAMD
USB Controller 6
Name OHCI USB Controller
Description OHCI USB Controller
Vendor AuthenticAMD
As long as my Windows Repair couldn't help me, I decided to use diskpart.
Diskpart is a Windows built-in utility to work with disks. I booted from an installation media, selected "Repair", went to the command prompt and typed the following:
diskpart
lis dis // helped me to find my disk
sel dis 0 // when typing "lis dis", my disk number was 0
active
exit // leaving the diskpart
exit // leaving the command prompt
After, I rebooted and my Windows was finally working!
Answered by bilal fazlani on December 16, 2021
I had the same problem and found that the partition which I had my OS on is not active. When I activated the partition, I was able to boot as normal. Try this I think it may help:
If you can remove your hard disk
Using diskpart
Type the following:
diskpart
list disk
select disk 0 (select your hard disk num listed in list disk here mine is disk 0)
list partition
find the partition in which your OS has been installed (you can find by looking at the size of the partition; here my OS partition is partition 3)
select partition 3
active
exit
That's it, you can reboot your system.
Answered by zangetsu on December 16, 2021
I had the same problem and discovered that the mouse I had connected to through a USB port was causing the problem. I did follow the suggestion above to make sure the first thing to Boot would be from disc, but after that, it still gave me the same error message you received. I was about to give up when I tried unplugging my mouse and the computer then booted from the disc.
Answered by bg1250 on December 16, 2021
Go into your BIOS and change the startup order. Make sure your harddrive is the first drive it tries to boot from. This will make sure it won't try to boot from any USB drive or DVD, etc.
New BIOSses usually have a key to access the boot menu anyway which you can use to boot from different media in the case you need to install windows etc.
Answered by LPChip on December 16, 2021
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