Did you use HP cert ? e.g slmgr.vbs -ilc c:\hp.XRM-MS if all were to done correctly you should try the other key ?
Save theses as .BAT files: Activate.bat Code: @echo off SLMGR.VBS -ilc CERTNAME.XRM-MS SLMGR.VBS -ipk *****-*****-*****-*****-***** Verify.bat Code: @echo off slmgr -dli slmgr -xpr slmgr -dlv Fill in the Cert Name and key you want to use. Copy your Cert into the same folder as the two .BAT files and run them.
I have the same (or at least similar) problem, W7 Ultimate x64 RTM. My laptop is a recent one from Acer that already has the SLIC 2.1 ex factory (I checked the Bios), it therefore cannot be that. So deleted Vista, installed W7 and successfully installed the certificate from this site via slmgr -ilc C:\ACER.xrm-ms (the OEM ID is properly displayed as Product ID). Now if I try to use the Acer W7 Ultimate SLP key (FJGCP-...) via Control Panel -> System -> Activate, I get but a 0xC004E003 failure message. Installing it via slmgr -ipk returns no error, and the key is displayed in the window slmgr -dlv opens, but I am nevertheless told precisely the same "Activate Windows now" message (with same limit and rearm count) as before.
Are you using the correct certificate? According to the stickied thread with the SLIC bin files in there are 2 Acer SLIC's (Acer[ACRSYSACRPRDCT-ANNI] and Acer[ACRSYSACRPRDCT-MSFT]). Try both of the certificates and see if either one works.
Technoboots, thank you very much for pointing out my second stupid mistake (using a SLIC 2.0 certificate instead of the proper 2.1 one). The first was "reflashing" the old Bios instead of the new one (which was in the folder next to it - to be precise, the models sold now have the new bios with SLIC 2.1, mine is a bit older and had a bios still equipped with SLIC 2.0). Anyway, it reports as genuinely activated now.