Achim has kindly updated his 1st post to now show both the method which does work on all boards and it's derivative batch file method (easier+quicker): http://www.xtremesystems.org/forums/...d.php?t=171105

This works for all AM2+ systems that I've seen so far.

MSI MB/BIOS: Most of you know near enough all of the latest BIOSes have the patch either enabled without option to disable or you're provided an option to choose what you would like yourself. However, as we have noticed the patch is still enabled with either choices. Using the following setup (BIOS P0F):



When you choose TLB Fix = Disabled in the BIOS and you boot-up setting AOD button = Red, you still get low performance, as below:



Why you get that is because the patch is disabled only on the first core. Hence, to completely disable it, you follow the above procedure outlined in the link. MSR registers needed to edit for the MSI RD790 are these two:

For each core:

Read MSR ->
Write MSR values ->

-

And now you get->



Near +170% increase. The above routine works perfectly to disable the patch.

BTW, that's AMD Power Monitor there, the latest version I linked earlier. Works much better.

Quote Originally Posted by justapost
Hmm have an HP laptop here whom does the same as your pc did afer reboots during automated software installation. No safemode was possible here also.
I can fix this issue here simply by choosing use last known working profile in the boot menu.
You must have had serious causes to recover this setup. Do you have a link or error nuber at hand to that xp error from the ms support site?
Yup, first thing I tried was LKGC but it failed as well as everything else.
MS Support site doesn't have any information on this. I used to be a software dev and MS beta tester a few years ago so I have relations there and talking to a few friends who are MVP's they told me something they didn't know had happened and so only way is to reinstall because it would be too much hassle. But I digress.

Reasons were, I had everything I needed migrated and installed on it temporarily and much work that I have to migrate over to another drive was installed on here for my continuous editing (PhD/science work). Don't have the CD's for those software either so I had to rescue it all. Took me 3 days non-stop.