IBLarry

I couldn't get the HD7870 to work in the end, so I went out and bought a GTX660 and it works perfectly - I dual-boot Win7 and Win8 and it works great on both without any issues. Thank you for all your help.

I don't have the card with me right now, but I was able to successfully install the desktop driver by including the mobility identifiers in the INF files as it already includes the same "chipset" (Vancouver) On another note I am only able to get pci_alloc = yes [256] when I do a compaction of both dGPU + eGPU and force eGPU to 32-bit, otherwise given any other option I get yes [128] - is this going to cause any other issues for me? Thanks

So I did a DSDT override successfully but I am now getting a code 43!! going crazy here

Please see here as requested: diag Thanks

So when I load Setup 1.x the PCI compaction fails unless I select 36bit or higher, however when I boot into Windows like this I get either normal windows with the eGPU not detected, or a 16-bit display and device manager shows the eGPU "working" but the dGPU is not present and I cannot change the resolution. It also shows a PCI Express standard root port with error 12, I am guessing this is related. When I shutdown I get a BSOD with "PROCESS_HAS_LOCKED_PAGES" I have tried every permutation of pci compaction but cannot get it to work successfully, even with all the other PCI devices disabled. Any ideas?

Thank you again for your reply. Is there any way I can demo this Setup 1.2 software? I am more than happy to pay $25 but if it doesn't work, I'd rather put that money towards a new desktop machine as I have already spent nearly $100 on the PE4L

This is great info, thanks for your help here. Do you think I am likely to see any appreciable gaming performance increase against the inbuilt card if I can successfully run a GTX660 or do you think I should just buy a desktop machine instead..

thanks I will give this a go - I noticed if I tried to cold boot the machine with the card plugged in it would do the normal POST checks (i.e. cycle num and key lock leds etc) and make noises but nothing would display - I tried connecting it as soon as the HP spash screen came up before windows even started booting but this did not achieve anything either. This is a stupid question but if I disable this how can I re-enable with no display if the egpu doesn't work for some reason?

Hello So I have an HP EliteBook 8560p with i7 and integrated Radeon HD 6470M - I purchased a PE4L-EC060A, although annoyingly I having played about since, I have now seen there is an option in the BIOS to change the link speed on the express slot to 2x! So the PE4L works with a PCIe NIC I had laying around, and I tried with an old Radeon HD2400 PRO, it picks up the card but there is no Windows 7 driver available for it (the site says there is, but looks like it is actually for Vista since when I try to install I get an error saying this driver is not for this version of Windows.) Anyway, I connected up my 2GB HD7870 and it spins up but then nothing happens, the laptop does not detect anything whatsoever - am I doing something wrong here? I have had another look through the FAQ but I can't see anything relevant to my situation... Any advice would be appreciated.. Thanks