the boot selection failed because a required device is inaccessible

saeen

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Hy there... I was on my tour to Cyprus and last night I came back I saw my PC uptime was 22days. I asked my brother wht's going on , he told me if you'll shut down pc, i'll not get it stared. Due to some reasons I restarted my pc and now its giving me this error. "the boot selection failed because a required device is inaccessible". I've 2 drives 500GB + 1000GB, windows is on 500GB drive which I check through BiOS & shows SATA Port 0 = (0.0GB), SATA Port 1 WDC WD10EARS-0 (1000.2GB). Please guide.
 

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Computer Manufacturer/Model Number
لو تنثر أحلامي, بž
OS
Windows 7 Ultimate x64
CPU
Intel Core 2 Duo E8400 @ 3.0Ghz
Motherboard
Intel DG43NB
Memory
4GB OCZ DDR2 PC2-6400 Gold GX XTC Dual Channel
Graphics Card(s)
XFX GeForce 8800GT 512MB Alpha Dog Edition
Sound Card
Realtek HD
Monitor(s) Displays
LG Flatron M237WA
Screen Resolution
1920 x 1080
Hard Drives
500GB WD5000AAKS 7200RPM, 1TB WD10EARS 5400RPM
PSU
Gigabyte
Case
Thermaltake
Cooling
Intel Stock
Keyboard
Manhattan
Mouse
Logitech
Internet Speed
8192 kb/s / 509kb/s

My Computer My Computer

Computer type
PC/Desktop
Computer Manufacturer/Model Number
Custom Build
OS
Windows 10 Pro x64
CPU
Intel Core i5 4440 @Stock
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Gigabyte Z97 D3H
Memory
4 x 4GB HyperX Fury DDR3
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Gigabyte GTX 1050Ti O4G
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Integrated
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Dell P2417H
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Samsung EVO 850 120GB / Toshiba DT01ACA050 1TB 7200prm 32MB
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Riotoro Onyx 750W
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Google Chrome
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Asus K55VJ(i5 3210M, GT635M / 2GB, 8GB DDR3, 500GB HDD)
Thanks for ur instant reply but this thread is not useful :(
 

My Computer My Computer

Computer Manufacturer/Model Number
لو تنثر أحلامي, بž
OS
Windows 7 Ultimate x64
CPU
Intel Core 2 Duo E8400 @ 3.0Ghz
Motherboard
Intel DG43NB
Memory
4GB OCZ DDR2 PC2-6400 Gold GX XTC Dual Channel
Graphics Card(s)
XFX GeForce 8800GT 512MB Alpha Dog Edition
Sound Card
Realtek HD
Monitor(s) Displays
LG Flatron M237WA
Screen Resolution
1920 x 1080
Hard Drives
500GB WD5000AAKS 7200RPM, 1TB WD10EARS 5400RPM
PSU
Gigabyte
Case
Thermaltake
Cooling
Intel Stock
Keyboard
Manhattan
Mouse
Logitech
Internet Speed
8192 kb/s / 509kb/s
I restarted my pc and now its giving me this error. "the boot selection failed because a required device is inaccessible". I've 2 drives 500GB + 1000GB, windows is on 500GB drive which I check through BiOS & shows SATA Port 0 = (0.0GB), SATA Port 1 WDC WD10EARS-0 (1000.2GB). Please guide.
Assuming your motherboard has more than just two SATA connectors, how about trying removing the 500GB drive cable from "Port 0" and reconnecting it to say SATA Port 3" (or just some other available SATA connector on the motherboard)?

It might be the SATA port 0 connector on the motherboard that is flaky.

Note that by moving the drive to another SATA connector, you might get some rumblings from Win7 at first boot after that, talking about "new hardware detected" and requesting a re-boot after the drivers get installed. Really, not much is going on here but if it does you should reboot. Everything should be back to normal after that second reboot.

Anyway, hopefully this use of another SATA connector might solve your problem.

You might also try removing the SATA cable from the drive, and then re-seating it again. Sometimes that's all it takes.

Hopefully, your 500GB drive hasn't actually died.
 

My Computer My Computer

Computer type
PC/Desktop
Computer Manufacturer/Model Number
Home-built, two systems (1) and (2)
OS
Windows 7 Pro x64 (1), Win7 Pro X64 (2)
CPU
i5-3350p 3.1Ghz/6MB-cache (1); E8400 3.0Ghz/6MB-cache (2)
Motherboard
ASUS P8Z77-V Pro (1); ASUS P5Q3 (2)
Memory
8GB PC3-12800 DDR3 (1); 4GB PC3-10600 DDR3 (2)
Graphics Card(s)
ATI HD7750 (1), (see TV cards); ATI R7 250 (2)
Sound Card
Realtek ALC892 HD Audio (1); Realtek ALC1200 HD Audio (2)
Monitor(s) Displays
Eizo HD2441W LCD, Eizo S2433W (1); Eizo 24" S2433W (2)
Screen Resolution
1920x1200, 1920x1200 (1); 1920x1200 (2)
Hard Drives
(1) 1TB SATA-II (7200RPM), 2x2TB SATA-III (7200RPM), 250GB SATA-III (10000RPM) for OS; 2x2TB external USB 3.0

(2) 320GB SATA-II (7200RPM), 750GB SATA-II (7200RPM), 150GB SATA-II (10000RPM) for OS; 2TB external USB 3.0
PSU
Nesteq ECS-6001 600W (1); Nesteq ECS-5001 500W (2)
Case
Acousti-Case 360 (1) and (2)
Cooling
Noctua NH-U12P SE2 for CPU, 2x120mm case fans (1) and (2)
Keyboard
IBM PS/2 (1) and (2)
Mouse
Logitech MX Revolution wireless (1); Microsoft wired (2)
Internet Speed
100mbps down / 10mbps up
Antivirus
Microsoft Security Essentials; Malwarebyte Anti-Malware Pro
Browser
Firefox
Other Info
Ceton InfiniTV 4-tuner cablecard-enabled TV card as well as Hauppauge HVR-2250 OTA/ATSC 2-tuner TV card in (1), running under Win7 WMC
I restarted my pc and now its giving me this error. "the boot selection failed because a required device is inaccessible". I've 2 drives 500GB + 1000GB, windows is on 500GB drive which I check through BiOS & shows SATA Port 0 = (0.0GB), SATA Port 1 WDC WD10EARS-0 (1000.2GB). Please guide.
Assuming your motherboard has more than just two SATA connectors, how about trying removing the 500GB drive cable from "Port 0" and reconnecting it to say SATA Port 3" (or just some other available SATA connector on the motherboard)?

It might be the SATA port 0 connector on the motherboard that is flaky.

Note that by moving the drive to another SATA connector, you might get some rumblings from Win7 at first boot after that, talking about "new hardware detected" and requesting a re-boot after the drivers get installed. Really, not much is going on here but if it does you should reboot. Everything should be back to normal after that second reboot.

Anyway, hopefully this use of another SATA connector might solve your problem.

You might also try removing the SATA cable from the drive, and then re-seating it again. Sometimes that's all it takes.

Hopefully, your 500GB drive hasn't actually died.

Thanks for such a detailed reply. I tried almost all motherboard SATA ports but no luck.... :(

I think my HDD is dead. Tomorrow gonna buy new one. This time 5,400RPM even for Windows partition.

Sent from my Motorola-XT502 using Tapatalk
 

My Computer My Computer

Computer Manufacturer/Model Number
لو تنثر أحلامي, بž
OS
Windows 7 Ultimate x64
CPU
Intel Core 2 Duo E8400 @ 3.0Ghz
Motherboard
Intel DG43NB
Memory
4GB OCZ DDR2 PC2-6400 Gold GX XTC Dual Channel
Graphics Card(s)
XFX GeForce 8800GT 512MB Alpha Dog Edition
Sound Card
Realtek HD
Monitor(s) Displays
LG Flatron M237WA
Screen Resolution
1920 x 1080
Hard Drives
500GB WD5000AAKS 7200RPM, 1TB WD10EARS 5400RPM
PSU
Gigabyte
Case
Thermaltake
Cooling
Intel Stock
Keyboard
Manhattan
Mouse
Logitech
Internet Speed
8192 kb/s / 509kb/s
I think my HDD is dead. Tomorrow gonna buy new one.
Ironically, right in the middle of doing something today my own "symptom" returned, yet again!

This is literally the complete "death" of a functioning Win7, and it's caused by the sudden loss of access to the C-drive.

Of course I've been fighting this for several months now, but none of the usual methods to coax it back to life would work. I tried everything I'd suggested to you, and none worked this time... though I'd been lucky with them in the past.

I tried using standalone boot CD's to see if I could explore that drive, but it just seemed to be non-responsive. Or, I could see the root-level folder structure but if I tried to get deeper than that it would just hang.

So, as one more extreme step this time I actually replaced the SATA cable with a brand new one. Well, that didn't make any difference. In fact, I now once again lost my drive's recognition completely in the BIOS! Gone (again)!

So once again, I removed the connector which was now sitting on SATA port 2 on the motherboard (having been moved last week from SATA port 4), and re-connected it to SATA port 3!

Well, this time that produced success! Once again the BIOS saw the drive, and Win7 was able to boot from it (though as I mentioned, new drivers will get installed on that first boot from the new SATA port which require one more restart) and I was finally back in business.

Time to run some current backups... just in case I lose it for good.

So, you're not alone.
 

My Computer My Computer

Computer type
PC/Desktop
Computer Manufacturer/Model Number
Home-built, two systems (1) and (2)
OS
Windows 7 Pro x64 (1), Win7 Pro X64 (2)
CPU
i5-3350p 3.1Ghz/6MB-cache (1); E8400 3.0Ghz/6MB-cache (2)
Motherboard
ASUS P8Z77-V Pro (1); ASUS P5Q3 (2)
Memory
8GB PC3-12800 DDR3 (1); 4GB PC3-10600 DDR3 (2)
Graphics Card(s)
ATI HD7750 (1), (see TV cards); ATI R7 250 (2)
Sound Card
Realtek ALC892 HD Audio (1); Realtek ALC1200 HD Audio (2)
Monitor(s) Displays
Eizo HD2441W LCD, Eizo S2433W (1); Eizo 24" S2433W (2)
Screen Resolution
1920x1200, 1920x1200 (1); 1920x1200 (2)
Hard Drives
(1) 1TB SATA-II (7200RPM), 2x2TB SATA-III (7200RPM), 250GB SATA-III (10000RPM) for OS; 2x2TB external USB 3.0

(2) 320GB SATA-II (7200RPM), 750GB SATA-II (7200RPM), 150GB SATA-II (10000RPM) for OS; 2TB external USB 3.0
PSU
Nesteq ECS-6001 600W (1); Nesteq ECS-5001 500W (2)
Case
Acousti-Case 360 (1) and (2)
Cooling
Noctua NH-U12P SE2 for CPU, 2x120mm case fans (1) and (2)
Keyboard
IBM PS/2 (1) and (2)
Mouse
Logitech MX Revolution wireless (1); Microsoft wired (2)
Internet Speed
100mbps down / 10mbps up
Antivirus
Microsoft Security Essentials; Malwarebyte Anti-Malware Pro
Browser
Firefox
Other Info
Ceton InfiniTV 4-tuner cablecard-enabled TV card as well as Hauppauge HVR-2250 OTA/ATSC 2-tuner TV card in (1), running under Win7 WMC
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