Can't boot up new build - "Reboot and select proper boot device or insert boot media"

aum110

Junior Member
May 22, 2012
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I just put together my new build, and I am having problems starting it up. It is a 3570K running on an ASrock Pro4-M Motherboard. I have a 128gb SSD and a 1 TB WD HDD (note the 1 TB drive is unformatted). Before I put it together I hooked the SSD up to my old computer and loaded a fresh install of windows 7, hoping that I could just turn on the new build and it would fire right up, but that wasn't the case.

When I start up the new build I get a screen saying, "Reboot and select proper boot device or insert boot media in selected boot device and press a key."

Does anyone know why I am getting this? I go into the BIOS, and it looks like it is booting from the SSD. Any advice would be appreciated.
 

lehtv

Elite Member
Dec 8, 2010
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What was the point of installing Win 7 on the SSD while connected to a different PC? It doesn't make the process any easier or simpler, if anything, it can mess things up. You shouldn't just move Win 7 over from one build to another without a reinstall, you should let the OS configure itself with the right hardware from the start.

Can't say for sure if the above is causing your problem, I'd expect it to at least try to boot to the OS. Bring up the boot menu during power up, and choose the SSD manually from there. Check your mobo manual to see which key you need to press, I'm not sure if it's the same for all mobos (for me it is F8).

Do you own an OEM copy of Win 7? If so, I hope you didn't activate it yet.
 

corkyg

Elite Member | Peripherals
Super Moderator
Mar 4, 2000
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You have to start from scratch. Like it says, insert your OS disk and do a fresh install. The install on the SSD in another machine was a waste of time and energy. You can't transfer OS drives from one machine to another and expect results. In many cases, what you would get is a BSOD.
 

gorcorps

aka Brandon
Jul 18, 2004
30,741
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You installed windows on a machine with completely different drivers and components. I'm not sure why you thought it would boot in any machine without issue, but that was very wrong. Just reformat and reinstall windows and you'll be good to go. On an SSD it doesn't take that long anyway.
 

aum110

Junior Member
May 22, 2012
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Thanks guys. I guess that was pretty dumb.

I thought I was being proactive since I was waiting for my PSU to arrive, and I guess it backfired. I never activated it, so I should be able to do a fresh install and not have a problem.
 
May 29, 2012
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Go into your BIOS and set it to recognize the SSD as an IDE drive and it will boot up. The BIOS is probably set to AHCI. I had the same problem.
 

sm625

Diamond Member
May 6, 2011
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Do not install windows on that SSD while the HDD is connected. Remove the 1 TB drive before installing. Reconnect the 1TB drive once windows is installed, ie once you get to the desktop.
 

ElFenix

Elite Member
Super Moderator
Mar 20, 2000
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OP's not even getting past the BIOS, so he should try unplugging the HDD to see if it'll start booting windows before he does anything else.



You have to start from scratch. Like it says, insert your OS disk and do a fresh install. The install on the SSD in another machine was a waste of time and energy. You can't transfer OS drives from one machine to another and expect results. In many cases, what you would get is a BSOD.

i've done it many, many times and the only time i've gotten a BSOD was on a specific issue moving from intel -> amd. which was resolved by deleting a specific intel driver. i just went from a c2q to an ivy with no issues. a fresh install upon big hardware changes may have been necessary back in the win9x days but nowadays it seems like a waste of time.

of course, i'm usually saving myself the pain in the rear of getting everything set back up again. here, the OP wasn't doing that so i'd recommend a completely fresh intall.
 

richaron

Golden Member
Mar 27, 2012
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No.. wut?.. no. Almost unpossible to run your installed OS from a different puter. Just install it fresh on your new machine (& 'blank' SSD) after it's hooked up.

It's heaps easier (/only possible) when you install your OS whilst on your current system.
 

mfenn

Elite Member
Jan 17, 2010
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No.. wut?.. no. Almost unpossible to run your installed OS from a different puter. Just install it fresh on your new machine (& 'blank' SSD) after it's hooked up.

It's heaps easier (/only possible) when you install your OS whilst on your current system.

I wouldn't go so far as to say it's impossible. It can be a pain in the ass though. Unless you're running Linux, at which point it becomes super easy and painless.
 

ElFenix

Elite Member
Super Moderator
Mar 20, 2000
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has no one but me actually done this in the last 5 years? are you all running exotic hardware? the only thing i've needed to do other than the one intel thing was pop in a driver disc or two.
 

mfenn

Elite Member
Jan 17, 2010
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I did it upgrading a P35 to a P55 and it worked, but the machine never seemed totally right after that. I always had weird issues until I just reinstalled.