I recently discovered this forum and found it as a great place to learn a lot of stuff.So this is my first post here… As I have been working with a computer repairs at hardware level, changing pch cipsets and other stuff is my work at daily basis .
So,i had a toshiba c55-a with a faulty HM70 chipset and celeron 1005m cpu…So PCH was for replacment and i replaced it with HM76 chipset because i wanted to upgrade to a better cpu,because HM70 doesnt support i3,i5,i5 cpus.I have managed to upgrade cooling and put i7-2670qm quad core cpu. There is already same toshiba`s with hm76 from factory so no problem. Upon upgrading chipset i had to clean me region of the bios which i did using the repositories found here on the forum and hex editor manually,nothing more… Now everything works ok but in device manager i have an usb hub which can not be identified:
Now i tried everything in software and problem persist so i thought that the chipset had issues but no.I replaced with another hm76 PCH ,cleaned me region,same issue.Then i replaced with original HM70 and cleaned me region and again same issue.
Also I have this issue on toshiba c850 which i did another day where i did conversion form hm70 to hm76 and 2 dell laptops where i replaced hm67 with same HM67 chipsets…Same usb problem…Apart from that everything else works like a charm… So i concluded i must be doing something wrong cleaning me region…I am using same method for cleaning me region for every pc and i never had any problems upon this 2 type of chipsets lately… Any thoughts ?
I don’t think this is related to ME. Even your old chipset & bios caused the same issue. The cleanup guide has instructions at the last step to verify if all settings were properly transferred (xml comparison). If you see that all the settings are correct, I would try to check the settings of the almost-same Toshiba model which came with HM76 from the factory. Maybe you need to adjust some setting due to the different chipset. Apart from these, does that device work under a different operating system such as Linux? If none of these work, I assume the problem is hardware related.
Thanks for your replay…yes i know that but it happened on 4 different models that i did repair this week. toshiba c850 hm70–>hm76 usb hub port 04 not recognized dell 3350 hm67–>hm67 usb hub port 06 not recognized dell n5110 hm67–>hm67 usb hub port 04 not recognized
But every usb and everything works…kinda weird because i had never problems before… What settings could adjust regarding this issue? Maybe something about MCTP? hm76 indeed has more usb 2.0 ports than hm70 but it should be configured automatically…
Since such invasive mods are rare, what I’m saying are only speculations. Keeping that in mind, I suggest you play around with Flash Image Tool (FITC) and its settings. Maybe the almost-same Toshiba model with HM76 has some small differences at the ME firmware which are FITC configurable. Generally, don’t flash firmware which was configured with HM70 SKU profile selected at FITC as the latter is able to automatically grey out options which are not relevant to certain chipsets. If the model with HM76 is the same, take its ME firmware and clean that instead, then flash it at your modded HM76 system. If it’s not the same (apart from chipset), then do it manually. Take the HM70 ME and compare with Toshiba’s equivalent HM76 to spot any differences that might be relevant to your problem.
Well thanks plutomaniac…I will keep this aside until i get the same toshiba with hm76 pch for comparing…We might learn something new…Anyway i will post results…
