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1. DELL PRECISION 490 BIOS A08 FOR FREE
2. DELL PRECISION 490 BIOS A08 INSTALL
3. DELL PRECISION 490 BIOS A08 WINDOWS 8
4. DELL PRECISION 490 BIOS A08 ZIP

Option ROMs are a funny story with secure boot. Pretty wired, huh?Ĭlick to expand.You're actually the second person to complain about this I think. To my surprise that worked and then I rebooted and Win 8 booted normally. Then I disabled automatic reboot after failure and saw that Win 8 could not boot because the boot device was inaccessable. Since you need to disable that in order to enable Secure Boot, there is currently no way to enable Secure Boot and still change the BIOS, it seems (or am I missing something here?).Īnyway, after I figured all this out I left the Legacy Boot Rom option enabled and was able to enter the Win 8 boot manager by pressing F8 (didn't work with Secure Boot on). So after a couple of BIOS battery removals I found out that it is turning off the Legacy Boot Rom Option that causes this behavior. And as soon as I reenabled all BIOS options that I had when Win 8 worked, I could not enter BIOS again.

So first of all I switched out my new hdds, inserted the original hdd with Win 7 and updated the BIOS to A08, hoping that would help with Win 8.

DELL PRECISION 490 BIOS A08 WINDOWS 8

But Windows 8 would boot no more, even though I enabled UEFI. That re-enabled the DELL logo and I was finally able to enter the BIOS again. Screen remained dark, no error message, nothing.Īfter that I removed the BIOS battery. So I figured I might get some error message and perhaps the option to enter the bios when I removed the hard disks. Later I enabled Fast Boot and, pretty pivotal to this story, Secure Boot.Īfter your post I rechecked and noticed that the A08 BIOS was not installed (even though the installer ran fine and reboot was ok, though I could not see anything since the display was dark).

DELL PRECISION 490 BIOS A08 INSTALL

Once you're at the desktop re-run the Clover DELL Precision 690 app to install Clover into your system's EFI.Click to expand.I switched to UEFI before the install. When you get to Clover, be sure to boot from the USB Stick.Īfter it reboots in Clover boot from the hard drive or SSD. Insert the USB Flash Drive in your Dell and boot from it. When finished, make a folder on it called 690 or whatever you want, copy all of the stuff you downloaded to that folder including the Clover DELL Precision 690 app. It should take a pretty long time to copy everything over, like 10-15 minutes. Go through the steps, if it errors out, your copy of El Capitan is garbage, go find another one. Rename it to Install OS X El Capitan.app if it is named something else. Install Pre-Installįrom another Mac, put your copy of El Capitan in the Applications folder. I think you can use FreeDOS for both of these. Get and flash your HighPoint BIOS from HighPoint. If this doesn't fix it, it is probably fucked. Press and hold power button again for ~30 sec, release it.Press and hold the power button for ~15 seconds, release it.Short the RTCRST pins with a jumper for ~15 seconds.

DELL PRECISION 490 BIOS A08 ZIP

If you get a zip copy the decompressed size should be about 5-6GB, if the copy you get is about 1.5GB, delete it and try again.

DELL PRECISION 490 BIOS A08 FOR FREE

The Dell 690 can be had for about $350 on eBay, I got one for free from a friend.