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Hello There, So I got 2 SSDs in my system One NVMe drive (Which is my OS disk) and one SATA drive that I use as game storage , but it used to be my OS disk a few months ago I formated the disk before reusing it but my bios still regognises it at as boot drive even tho there is no OS onto it I already changed the setting both in the command prompt and in my bios so that my NVMe drive is the one my pc boots onto and so my bios recognises it as a boot device manager and a boot drive but that second SSD I cannot remove from the list But no matter what 1 times out of 2 I got a bluescreen just like the one linus got onto his last personal rig hardware update where it tells you the OS can't find the booting files, after that I just have to enter BIOS and then exit it/reboot onto my NVMe OS drive and everything s good so far I don't really know what to do that I didn't already do so if anyone has a fix for this I will take it thanks a lot

Hi so today I've installed my new ssd (Samsung 980 1tb) and I can't find my usb windows 11 boot device in my bios. I've selected tpm 2.0 and nothing seems to work. Even taking csm support off it still won't show. Is there supposed to be a usb device slot I should put it on or what. Please help!

Hello all, thanks in advance! This issue is not happening every time, but it has been happening often and it's very frustrating! I seem to notice it particularly happening after restarting from an install or update. It could just be coincidental. If I try to reboot and go into the BIOS to change the boot priority, my M.2 with the OS on it does not show up as an option. I have to physically uninstall the M.2 and reinstall it. Once does this, the system boots fine. I just don't understand why it keeps happening. I also don't understand why physically uninstalling the M.2 temporarily solves the problem. See PC specs below. OS: Windows 10 CPU: AMD Ryzen 5 1st Gen - RYZEN 5 1600 Summit Ridge (Zen) 6-Core 3.2 GHz (3.6 GHz Turbo) Socket AM4 65W YD1600BBAEBOX Motherboard: ASUS ROG Strix B450-F Gaming II AMD AM4 (3rd Gen Ryzen) RAM: CORSAIR Vengeance RGB Pro (AMD Ryzen Ready) 16GB (2 x 8GB) 288-Pin DDR4 3600 GPU: PowerColor AMD Radeon RX 5600 XT 6GB AXRX 5600XT 6GBD6-3DHV2/OC Storage: Team Group MP33 PRO M.2 2280 1TB PCIe 3.0 x4 with NVMe 1.3 3D NAND Internal Solid State Drive (SSD) TM8FPD001T0C101 WD Blue 2TB Desktop Hard Disk Drive - 5400 RPM SATA 6Gb/s 64MB Cache 3.5 Inch - WD20EZRZ WD Blue 250GB Internal SSD Solid State Drive - SATA 6Gb/s 2.5 Inch - WDS250G1B0A PSU: EVGA SuperNOVA 120-GP-0650-X1, 650 G+, 80 Plus Gold 650W, Fully Modular Case: Phanteks Eclipse P400A PH-EC400ATG_DWT01 White Steel / Tempered Glass ATX Mid Tower Computer Case Cooling: Cooler Master Hyper 212 Evo CPU Cooler, 4 CDC Heatpipes, 120mm PWM Fan, Aluminum Fins for AMD Ryzen/Intel LGA1200/1151

I've been having this problem for awhile now, but it just recently started to bug me. My motherboard doesn't seem to detect my solid state drive as a bootable device But here's the strange part: My motherboard lists the SSD as a plugged in SATA device, as does the F8 Boot Menu. I just can't seem to set it as default. I have included pictures of what I mean. Thanks for any help!

So last night I paired this motherboard with 10gb known working DDR3 and a known working i5-2400 CPU. However, when I try and boot into Windows, the Windows logo comes up for a few seconds along with the spinning dots, and it then bluescreens and gives the inaccessible boot device error. I've managed once to try to boot into safe mode, but it crashes with the same error. Startup repair does nothing, and I have three other SATA ports I could try. My theory is since it's reading the drive to begin with the SATA port isn't damaged and maybe it's a driver related issue. I could try the other SATA ports, and I could also try resetting the CMOS to get into the RM Education BIOS which I will eventually take off. Anyone know what's up? I literally pulled the drive out of my current system so I know it works.

I recently purchased a Samsung 970 evo and have been getting an error for 5 months now when trying to use it. I already have a HDD with windows 10 downloaded, however my computer does not want to boot from the HDD and displays the error "Reboot and select proper boot device." I wish I knew what the error was

Hey guys, today I decided to upgrade my parents pc with an SSD and do a clean windows install on it. Everything went fine, I installed their office 365 etc, until I removed the HDD. When i tried starting the pc it gave me an error telling me to 'reboot and select proper boot device.' but in the bios it doesn't detect the SSD as a boot device. In the 'miscellaneous' options it did show up. I restarted the pc multiple times when the other HDD was still connected, but when I removed it it stopped working. I hope anyone can help,

Mx500 is not directly bootable I get trouble loading os message. I installed windows on this mx500 ssd with windows USB installation media made with media creation tool. I was trying to replace my 240gb ssd with a larger 500gb one. I tried cloning with the software that came with the crucial mx 500 ssd but that wasn't bootable either so I did a fresh install on the crucial mx500 and ran into this problem.In my bios if I select the mx500 as primary boot device it gives me the trouble loading os message. If I select my hdd it gives me the option to load either ssd, the old or the new, regardless of whether the old one is attached, via windows manager. The mx 500 does not have the uefi symbol on it the only thing that does is the hdd I used for storage and the bootable installation media on usb. Why would that be?I want to make this fresh install bootable since I've already installed all my music production software again. If you need more info let me know. Thanks

Hello there! So.. The same thing happened about 3-4 days ago. I was trying to turn on my pc after a week of being on vacation (surprisingly my monitor died in this period too, took it to repair it but they told us it's completely dead which is strange because we didn't touch it for a week????).. Anyways. I tried turning on my pc and got a huge red box. SECURE BOOT VIOLATION The system found unauthorized changes in the firmware, operating system or UEFI drivers. Press OK to run the next boot device blablabla... Upon pressing the enter key I get 'Reboot and select proper boot device or insert boot media in selected boot device and press a key' I tried switching the boot orders up in the BIOS and such.. Nothing works. Windows repair doesn't notice any problems. The only way to get through this is reinstalling windows, which gets rid of my passwords, chrome history and such. Also the drivers. And I don't plan on reinstalling everything in every 5th day. Do you guys have any clues what I should do?? Should I just not let windows download the updates because it seems to cause this error.

Hello All, Having an issue that I encountered a few days ago when installing new fans. Issue: Computer boots to windows login, then shuts off. Second boot stays on fine. The Boot Device LED is on during 1st failure, and off during second. Doesn't matter how many times or how long i wait to boot computer, EVERY OTHER boot has Boot Device LED on and shuts down. This began when I bough new RGB 120mm fans for my case. They worked fine for a few days. I realized I need to move the air flow and switched them up a little. All was well, until the switch. I noticed the RGB lights would dim at Start Up and then go back to Full Power and then the PC would shut off. I disassembled my PC, everything, re-coated CPU with Thermal, cable management, fans, changed Memory slots from A1-B1, to A2-B2, and inspected and re-set everything. I also changed RGB fans from Chasis Fan connectors to straight to PSU, which solved the low power mode on them, and no longer dim. Everything seems to be running fine when it works, and used 'Hard Disk Sentinel' to inspect drives. everything is fine. But have no idea why the Boot Device LED is on every other boot. PC SPECS: MOBO: ASUS Z170E CPU: i7-6700k CPU Cooler: Corsair Hydro Water Memory: 2x8 Corsair Vengeance LPX Bootable Drive: Intel NVMe 750 400GB Storage Drives: 2x Western Digital Blues 1TB & 2TB GPU: ASUS 1060 6GB Thanks in Advanced people!

I just upgraded to a shiny new Ryzen 2700x from my sandy bridge i5, and I am experiencing a strange problem. On my PC I have a RAID 0 array that has my operating system on it, and 2 1TB HDD, for mass storage. I formatted the array and rebuilt it, and after that I reinstalled Windows 10 on it, and also booted into windows, and no problem occurred. After that, i plugged in my 2 HDD, and suddenly i was not able to boot into windows anymore, and I got an error message that said to 'insert proper boot device'. I checked my boot order, and my raid array was first. Still nothing. After that, i tried booting into my raid array directly from the BIOS(just for reference, I have an asus ROG x470 crosshair 7 hero board) with the boot override, and i still get the same error. If i unplug both of the HDD, i can boot just fine into Windows. Any ideas on how to fix this?

Here is situation I'm in trying to get this darn computer to boot into Windows. Each time I start up this 2013 ASUS VivoBook now I get a "reboot and select proper boot device or insert boot media in selected boot device and press a key" message. Everything was fine up until a few days ago. The BIOS only has an option for boot priority as Windows Boot Manager followed by string of numbers. I had been finding guides and tutorials and some tell me that the issue is a partition issue or EUFI issue? When I go to see a roster of disks and volumes, cmd prompt on my Windows 8 install image can see it, but I somehow can't fix it or is "hidden". The refresh option on the installation tools starts but eventually says there was a problem. Restore starts, and can view the last time my system was online but said I had to repair the disk. I repair the disk and it completes the progress bar, but I try to proceed with restore and a dialog pops up saying there still needs to repair the disk. I can't continue. Tried repairing through cmd prompt and got to stage 4 of chkdsk when it I guess froze. There appeared to be a huge number however, so I could just wait overnight... The chkdsk process did however say there were a small number of bad sectors. There are semi-important files I'd like to get off incase my HDD is failing. How could I try to get into Windows again to safely get the files off?

I just finished my first computer. Every component works, but something strange is happening. I have installed Windows 10 on my SSD (Samsung PM871), but it doesn't show up in the boot priority menu (MSI B350 PC MATE). Only my HDD (WD Blue 1TB) does. When I'm all booted, only my SSD is available through the file manager. When I open my device manager, it says the HDD is connected and I have the latest drivers and everything. Does anyone have an idea how to fix this? Also, when I change my BIOS settings from RAID to AHCI, it boots. When I change back to RAID, it doesn't (INACCESSIBLE_BOOT_DEVICE). Edit: I've tried partitioning the drive. It says it already is.

System Configuration: CPU: Intel Core i5-6500 3.2GHz Quad-Core Processor CPU Cooler: Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler Motherboard: Asus Z170-A ATX LGA1151 Motherboard Memory: Kingston HyperX Fury Black 8GB (2 x 4GB) DDR4-2133 Memory Storage: Samsung 850 EVO-Series 500GB 2.5" Solid State Drive Video Card: MSI Radeon R9 380 4GB Video Card Case: NZXT Source 210 Elite (Black) ATX Mid Tower Case Power Supply: EVGA SuperNOVA GS 650W 80+ Gold Certified Fully-Modular ATX Power Supply Trouble Shooting Steps I Already Did: Make sure your BIOS version is compatible with the CPU generation you're trying to run in your motherboard, you can consult the manual or the manufacturer's website about this. (I built this using PCPartpicker... so I'm pretty sure but not positive that means they are compatible. Is this true?) Check if EVERY power cable is connected. Auxiliary power connectors included. Make sure the cable coming from your monitor is attached securely to the graphics card. Also make sure it is securely attached to the monitor itself. Make sure your PSU is powerful enough to power your complete system. Make sure your monitor works by testing it on a different computer. If you have both a dedicated GPU and an iGPU, try your monitor on both the outputs on the graphics cards as well as on the motherboard. Make sure all connectors and cables are plugged in securely, reseat if necessary. Make sure your RAM, CPU and GPU are plugged in securely, reseat if necessary. If the motherboard you're using has debug LEDs, check the error code and consult the motherboard manual to see what it means. If you have a debug speaker connected to the motherboard, note the beep sequence and consult the motherboard manual or this thread to see what it means. Try clearing your CMOS. (Yes, left the battery out for a whole 10 minutes!) Try booting your computer with only a motherboard, CPU and one stick of RAM attached (if you don't have an iGPU, plug in your GPU as well ). Make sure your GPU works (if you have a dedicated one), try it in another computer. Make sure your RAM works, try it another computer. Make sure the RAM is compatible with your CPU and your motherboard. Additional information that may be relevant I exchanged the mother board for a new one. I'm putting a pea sized amount of thermal paste on the cpu before installing the cooler. I've attempted booting w/o the storage device connected. I've tried booting with each stick of ram as a stand alone. I assembled outside the case, as well, to make sure the mobo wasn't grounding on something inside. I called ASUS help desk and they couldn't help either. Yes, I really did all 15 steps... multiple times. Big thanks to @HPWebcamAble for helping with my initial trouble shoot. I've built my rig twice now, with two different mobo's. After both builds, when I power on the comp, it goes through POST and stops at the BOOT_DEVICE LED. The manual simply says, "If any error is found, the critical component's LED stays lit up until the problem is solved." What are the odds that both mobo's are defective? I built the rig using PCPartpicker, even still, I went through to confirm that the parts are compatible. To my amateur understanding they are... HOWEVER, I admit I maybe wrong, as I am a noob. Honestly, I'm open to any (rational) recommendations at this point and I thank you all for your advice in advance!

I was wanting to mess around a bit with VirtualBox, but wasn't getting 64-bit options, read I had to enable VD-t in the BIOS, but once I rebooted, it came up with an INACCESSIBLE_BOOT_DEVICE error. I then disabled it again, but to no avail. I didn't change any other settings what so ever either, so I have no idea how to fix it. I would very much prefer it if I didn't have to reinstall windows.My boot drive is a RAID 0 setup with two Kingston V300 120 Gb SSD's if that helps.Cheers

Hi, So let's cut to the chase I just did a fresh install of Windows 7 on my new ssd about 2 weeks ago and today when I go to use my pc it says insert boot media. So I unplug 2 of the other hard drives I have in there just in case if it was loading from that and also the cd drive. Still the same thing I even put windows 7 disc to see if I could run repair but that doesn't work. I have even trI'd different satay cables and still nothing. If anyone has any ideas on what I should do any help would be appreciated.

Hey. I just got all the parts for my new PC. Spec list is here: http://pcpartpicker.com/p/q7QWwP So I built the thing, and it POSTed, and it recognized the CPU and full RAM amount. But then displayed an error along the lines of "Attach boot device and press any key." The boot device LED on the M5A99FX Pro motherboard is lit. Well, my SSD was the only drive plugged in, so I tried using the HDD. Still wouldn't work. Then I read that Asus boards sometimes have trouble with the SATA controllers, and that flashing the BIOS might fix it. So I tried the newest BIOS and it POSTed and nearly loaded into UEFI, but it wasn't functional. For some reason, the whole screen was black until I moused over the blocks to "uncover" the GUI. Really glitchy. There were no clickable things either; just the time and system voltages/fan speeds, which were accurate. Then I tried an older BIOS version, and now it won't POST at all. Boot device LED still lit, still no POST. Send aids.

Should i install New OS as ACHI or RAID on a SSD as a boot device with HDD as a storage ? i'm confused, or should i choose RAID option ? i'm buying a new 840 pro SSD and MSI gaming 5 Mobo, and WD 1 TB HDD, i'm confused in what mode should i install the new OS ? please guide me , i'm not a pro

I'm working on a new build, and just got everything in the case, and everytime I power it on it shows a quick flash of the bios screen, and then goes to the 'please select proper boot device' screen. My cousin and I have made sure everything is plugged in correctly, tried different Sata ports, using different sata cables, etc. Any ideas on what to try?