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Windows 7: Unable to locate MBR or HDD until system shut off for a few hours

19 Jun 2010   #1
Mystictrust

Windows 7 Pro 64-bit
 
 
Unable to locate MBR or HDD until system shut off for a few hours

Apologies if this is in the wrong forum, this is my first time here. If this post is too long, I can try and condense it.

I usually leave PC in sleep mode, last night was no exception. I am used to it occasionally turning itself back on every few days (not sure why) so no surprise to see lights on my comp when I woke up. However, the screen was black with white text, with an error message something to the effect of the system being unable to locate the boot drive. Restart did nothing. I went into BIOS to swap my other internal HDD into boot drive but there's no Master Boot Record on it so the BIOS only saw my primary drive and DVD drive.

I booted into Win7 DVD and tried to auto repair which didn't work after reboot. Trying to recover from system restore gave me an error. I attempted to do an in-place upgrade with Win7 to perhaps rebuild the MBR but it wouldn't let me use the upgrade option since I needed to be within Windows. Tried the custom install, it didn't even recognize my main HDD, it only saw my lesser 500GB WD drive and I wasn't about to choose to overwrite one of my partitions.

I shut down the computer and went back to sleep perplexed. I woke up, turned on PC one last time (Was about to go out and buy a new HDD to install Win7 to so I could try and recover my missing HDD's files). Interestingly enough, the system asked me if I wanted to boot into safe mode because it was shut down improperly. Now it boots into Windows just fine with no problems.

What's going on? Was told at electronic's store that it could be a fault SATA connector on my Mobo, meaning I'd need to replace the whole thing. Could it be the (4 month old) HDD? What else could it be? Why was the system fine after it had been off for awhile rather than through countless hard and soft reboots?


My System SpecsSystem Spec
.
19 Jun 2010   #2
theog

Microsoft Community Contributor Award Recipient

ME/XP/Vista/Win7
 
 

THe HD may be overheating.
My System SpecsSystem Spec
19 Jun 2010   #3
Mystictrust

Windows 7 Pro 64-bit
 
 

Hmm, that's something I've never thought of. Would the temp reading for my CPU/Mobo within the BIOS be accurate (if so, what is the ideal temp?) or is there a more ideal way to gauge if overheating is the issue?
My System SpecsSystem Spec
.

19 Jun 2010   #4
theog

Microsoft Community Contributor Award Recipient

ME/XP/Vista/Win7
 
 

May be look in to geting a case fan, HD fan.
My System SpecsSystem Spec
19 Jun 2010   #5
Mystictrust

Windows 7 Pro 64-bit
 
 

I have the Antec Nine Hundred, and have two case fans one on top of the other in the front. One of the fans flows directly over both of my HDD's.
My System SpecsSystem Spec
19 Jun 2010   #6
Dixon Butz

Win7 x64 X2, Win 8.0 x64, Win8.1 x64, Quad Boot
 
 

Get rid of the fish eggs and Deathstar.
Don't buy another hard drive unless it says Samsung on it.
The coolest, quietest, and most reliable hard drives made.
My System SpecsSystem Spec
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 Unable to locate MBR or HDD until system shut off for a few hours




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