Hervé

Seems your graphics are not initializing. How about if you boot with option "GraphicsEnabler=No" ? Which SMBIOS profile are you using? I'd recommend iMac14,1 or iMac14,2.

if you don't use myHack, myFix is of no use for you. Just install the lspcidrv kext by whatever method fits your own installation. I guess you'll probably install it to /S/L/E through one of those tools such as KextWizard or similar. You'll find the kext either on the Net or through a search on the forum.

Boot with -v flag and report back with details of the last message(s) displayed on screen.

Re: GPT0 error, that sounds like the good old 4K sector issue and you will find the fix for that with a search on the forum. Regarding the stuck spinning wheel under Apple logo, the best is to boot with -v option and post us the details of where things appear to hang in the boot process.

Don't get confused: making a donation is in no way linked to providing support. This not the way OSXL operates. You'll get support along your own research path by posting your own trials and findings. Naturally, it helps if the crew of an existing forum member has a similar model to yours, but if it's not the case, you need to be patient I'm afraid...

In case you have a Bluetooth module, try and disable it in BIOS. One many computers with BT, OS X will start by looking for a BT keyboard and mouse and that needs to be disabled in the BT Pref Pane.

No difference in the way they operate, just a difference in the way they are presented to the user. The advantage of the WWAN module is that it shows signal strength in Finder bar as a cell phone would.

Actually, Win7 can be installed on a GPT-partitionned disc as long as the targetted partition has previously been formatted as FAT under OS X. The Windows installer will see the partition and reformat it NTFS before proceeding with installation. This on systems with "legacy" BIOS I understand, not on more recent UEFI-based systems.

OS X can not natively write to NTFS partitions. You either need to install a piece of software for that (the names elude me, but they're not free) or you need to format your USB disk as FAT or OS X Extended (Journaled).

I had a similar issue with Lion on my D630 GMAX3100 HiRes a few months ago. It would randomly give me the "black screen of death". I can't remember what I did to get it fixed, I think I recreated the /E/E with fresh copies of kexts then ran myFix (quick). Did you add anything recently, prior to the beginning of the trouble? You KP picture shows kernel 13.0.0 and that is not Lion by the way... So, Lion or Mavericks???

You should always try to choose a profile that resembles your own hardware.

Well, I'm jealous, because CPU at or near full speed at 38° and NVS 135M at full speed at 65° is something I've never managed to obtain.

Because MBP8,1 is based on HD3000 GPU, unlike the MBP8,2/MBP8,3 which are based on dual GPU with ATI Radeon discrete graphics card + HD3000. Use Chameleon Wizard SMBIOS tab to check that up.

Don't use myHack v3.3.1 for SL, it's been mentioned a dozen times, there is a bug. Use myHack v3.1.2 instead.

Well, I have no explanation... Dust clog in front of fan entry?

I've not bothered to experience with Win8 so your precision is very useful indeed. The tuto should be refined to that effect.

You are somehow incorrect regarding installing Windows on a GPT partitioned disk in the sense that it is not limited to UEFI computers only. There's no problem doing that at all on bog standard older computers running "legacy" BIOS only. This works for Win7 at least, I can't speak for older OS like XP or Vista. That is exactly what I have on one of my Latitude D630: This HDD was originally partitioned through Disk Utility, having booted a myHack USB Lion installer with its default Chameleon bootloader. Win7 was installed after OS X Lion. The Win7 partition was initially formatted FAT in Disk Utility and subsequently reformatted NTFS by the Windows installer. There was no involvement of Clover or any other fancy tool, just our good old regular Chameleon and myHack installer.

If it's not listed anywhere, the answer is no.

Try and disable your discrete video card or the integrated GPU in BIOS to see if it makes any difference. Also, do try and identify your exact wireless card model as Intel cards are unsupported and not all Broadcom/Atheros/Realtek/others are supported.

To be tested...

Ensure you have lspcidrv kext loaded (put it in /Extra/Extensions then run myFix (quick)) and use Terminal command lspci -nn to give us the PCI details of your hardware.

No, I no longer have them; 'long been overwritten and I never kept a copy of any DP stuff. Could try ML kexts though...

Then, it's probably like the DW5520 in Mav: it does not appear to work (yet, I had DW5520 working under DP versions of Mavericks).

Displayed T° could be wrong. CPU at 38° is something rarely seen in my opinion (at startup from cold for instance or after a wake). What are you using to measure T°? What is your FakeSMC kext version? What SMBIOS profile are you using? Which CPU? Which D6xx model?

In that case, it might just be available as a dial-up modem, not a WWAN card.