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STOP eroor 0x0000007F - any ideas?

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Coelocanth Coelocanth Feb 03, 2013 11:40 AM Reply | Bookmark
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So I tried to reboot my computer and I get a stop error:

STOP: 0x0000007F (0x00000000, 0x00000000, 0x00000000, 0x00000000)

I googled this and most results seemed to indicate it could be the system's memory. So I tried new memory in the board and ran Memtest86+ as well. No errors with Memtest. Machine still won't boot.

So I tried a Linux Live CD and was able to salvage some files.

So then I tried to reboot and see if I could get back to desktop in XP. Sometimes it will go to desktop but before I can do anything I get the STOP error again. Once, before it went that far, it went straight to CHKDSK and started indicating that it was deleting files and moving some to other folders.

Now, when I finally get it to attempt to boot, I get an Active Desktop Recovery screen. If I try to get it to restore the active desktop I get an error. If I tell it to run scripts anyway or if I tell it to not run scripts, I get the STOP error again.

So I figured I'd try a repair. Popped the install disc in the drive and started it up. But I don't get the repair options. Once it loads all the drivers and files, it immediately starts up XP and I get the STOP error again. I don't even get the choice of whether or not I want to do a fresh install (and at this point, I figure reinstalling the OS is the only option).

I've checked the capacitors and they all look fine, and I've also replaced the CMOS battery. No joy.

So, in light of that, am I dealing with a dying hard drive, a borked OS, or is there something else going on? I'm stumped. Any input is appreciated.


Intel C2D E6750
Gigabyte P35 DS3L
Mushkin Redlines 2 x2GB kit (I've also tried Corsair XMS2 2 x 2GB kit)
EVGA GTX 260 Core 216 896 MB
WD 250 GB SATA2 (OS drive)
Seagate 160 GB SATA
PC P&C Silencer 750W
Windows XP SP3

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Q-Ball 7 Q-Ball 7 Feb 03, 2013 11:57 AM Reply | Bookmark
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If you're still trying this, you might have results if you turn off AHCI mode in the BIOS (assuming you haven't done that already- it's not hard to forget).

Might try dropping the RAM speed multiplier for normal booting, though this might be useless given that Linux works flawlessly (in my experience, it's the other way around; for instance, Linux doesn't like my 4GHz i3 while Windows is fine with it).

You might try checking hard drive SMART data with the Linux LiveCD ( to somewhat test the drive (though TBH it might not pick up anything).

Otherwise, I have no definitive answer. r

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Coelocanth Coelocanth Feb 03, 2013 03:05 PM Reply | Bookmark
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Thanks for the response, Q-Ball 7.

I tooled around in the BIOS for a bit. It was reset to default, which is AHCI off, but upon closer inspection I noticed this set the sata channels to 'legacy IDE' mode. I switched that to 'native IDE' mode and it worked! I can now access the desktop. I've restarted 3 times and got to the desktop without issue all three times. So I've installed the latest chipset drivers, just to make sure I'm up to date, and am now doing a full virus scan. Even if it turns up clean, I may just do a clean install of the OS just to have a fresh start without all the clutter I've accumulated over the years.

Again, thanks for the help. I may not have caught the problem if you hadn't prompted me to double check the AHCI setting.

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